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47980191441 = 37133112744641
BaseRepresentation
bin101100101011110101…
…111001111011010001
311120211211012021011110
4230223311321323101
51241230412111231
634013010003533
73315664620030
oct545365717321
9146754167143
1047980191441
1119391626a86
1293705765a9
1346a847b430
14247239a717
1513ac3bd046
hexb2bd79ed1

47980191441 has 64 divisors (see below), whose sum is σ = 81918427136. Its totient is φ = 24298444800.

The previous prime is 47980191437. The next prime is 47980191461. The reversal of 47980191441 is 14419108974.

It is a happy number.

It is not a de Polignac number, because 47980191441 - 22 = 47980191437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47980191461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1052481 + ... + 1097121.

It is an arithmetic number, because the mean of its divisors is an integer number (1279975424).

Almost surely, 247980191441 is an apocalyptic number.

It is an amenable number.

47980191441 is a deficient number, since it is larger than the sum of its proper divisors (33938235695).

47980191441 is a wasteful number, since it uses less digits than its factorization.

47980191441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44822.

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 47980191441 in words is "forty-seven billion, nine hundred eighty million, one hundred ninety-one thousand, four hundred forty-one".

Divisors: 1 3 7 13 21 31 39 91 93 127 217 273 381 403 651 889 1209 1651 2667 2821 3937 4953 8463 11557 11811 27559 34671 44641 51181 82677 133923 153543 312487 358267 580333 937461 1074801 1383871 1740999 4062331 4151613 5669407 9687097 12186993 17008221 17990323 29061291 39685849 53970969 73702291 119057547 125932261 175751617 221106873 377796783 515916037 527254851 1230261319 1547748111 2284771021 3690783957 6854313063 15993397147 47980191441