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51050667161 = 1319874723629
BaseRepresentation
bin101111100010110110…
…110101110010011001
311212202210211121000102
4233202312311302121
51314022432322121
635241412545145
73455040340214
oct574266656231
9155683747012
1051050667161
111a71785291a
129a889221b5
134a77639b80
1426840aa77b
1514dbc3390b
hexbe2db5c99

51050667161 has 16 divisors (see below), whose sum is σ = 57880267200. Its totient is φ = 44636505408.

The previous prime is 51050667121. The next prime is 51050667211. The reversal of 51050667161 is 16176605015.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-51050667161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51050667121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2148695 + ... + 2172323.

It is an arithmetic number, because the mean of its divisors is an integer number (3617516700).

Almost surely, 251050667161 is an apocalyptic number.

It is an amenable number.

51050667161 is a deficient number, since it is larger than the sum of its proper divisors (6829600039).

51050667161 is a wasteful number, since it uses less digits than its factorization.

51050667161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32408.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 51050667161 in words is "fifty-one billion, fifty million, six hundred sixty-seven thousand, one hundred sixty-one".

Divisors: 1 13 19 247 8747 23629 113711 166193 307177 448951 2160509 5836363 206682863 2686877219 3926974397 51050667161