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47980919061 = 32431006112323
BaseRepresentation
bin101100101011111000…
…101011100100010101
311120211212120020021100
4230223320223210111
51241231103402221
634013033340313
73316004040255
oct545370534425
9146755506240
1047980919061
1119391a83719
129370867699
1346a867468a
142472509965
1513ac4b3926
hexb2be2b915

47980919061 has 24 divisors (see below), whose sum is σ = 70930338336. Its totient is φ = 31237748640.

The previous prime is 47980919057. The next prime is 47980919071. The reversal of 47980919061 is 16091908974.

47980919061 is a `hidden beast` number, since 479 + 80 + 9 + 1 + 90 + 6 + 1 = 666.

It is not a de Polignac number, because 47980919061 - 22 = 47980919057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47980918989 and 47980919007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47980919071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3887446 + ... + 3899768.

It is an arithmetic number, because the mean of its divisors is an integer number (2955430764).

Almost surely, 247980919061 is an apocalyptic number.

It is an amenable number.

47980919061 is a deficient number, since it is larger than the sum of its proper divisors (22949419275).

47980919061 is a wasteful number, since it uses less digits than its factorization.

47980919061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22433 (or 22430 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 47980919061 in words is "forty-seven billion, nine hundred eighty million, nine hundred nineteen thousand, sixty-one".

Divisors: 1 3 9 43 129 387 10061 12323 30183 36969 90549 110907 432623 529889 1297869 1589667 3893607 4769001 123981703 371945109 1115835327 5331213229 15993639687 47980919061