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51970308525745 = 579131570401331
BaseRepresentation
bin10111101000100010001111…
…10001110100111010110001
320211000022110011020221111021
423310101013301310322301
523302440142440310440
6302310455151015441
713642505456516251
oct1364210761647261
9224008404227437
1051970308525745
11156175363328a5
1259b423b20a581
1322cca187b686c
14cb953aa01961
15601d0115884a
hex2f4447c74eb1

51970308525745 has 8 divisors (see below), whose sum is σ = 63153792639360. Its totient is φ = 41049965214960.

The previous prime is 51970308525731. The next prime is 51970308525787. The reversal of 51970308525745 is 54752580307915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51970308525745 - 213 = 51970308517553 is a prime.

It is a super-2 number, since 2×519703085257452 (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65785200271 + ... + 65785201060.

It is an arithmetic number, because the mean of its divisors is an integer number (7894224079920).

Almost surely, 251970308525745 is an apocalyptic number.

It is an amenable number.

51970308525745 is a deficient number, since it is larger than the sum of its proper divisors (11183484113615).

51970308525745 is a wasteful number, since it uses less digits than its factorization.

51970308525745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131570401415.

The product of its (nonzero) digits is 52920000, while the sum is 61.

The spelling of 51970308525745 in words is "fifty-one trillion, nine hundred seventy billion, three hundred eight million, five hundred twenty-five thousand, seven hundred forty-five".

Divisors: 1 5 79 395 131570401331 657852006655 10394061705149 51970308525745