51611327745 has 32 divisors (see below), whose sum is σ = 83505510144. Its totient is φ = 27217632000.

The previous prime is 51611327737. The next prime is 51611327797. The reversal of 51611327745 is 54772311615.

It is not a de Polignac number, because 51611327745 - 2³ = 51611327737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51611327697 and 51611327706.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1149060 + ... + 1193130.

It is an arithmetic number, because the mean of its divisors is an integer number (2609547192).

Almost surely, 2^51611327745 is an apocalyptic number.

It is an amenable number.

51611327745 is a deficient number, since it is larger than the sum of its proper divisors (31894182399).

51611327745 is a wasteful number, since it uses less digits than its factorization.

51611327745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44953.

The product of its digits is 176400, while the sum is 42.

The spelling of 51611327745 in words is "fifty-one billion, six hundred eleven million, three hundred twenty-seven thousand, seven hundred forty-five".