51061111660492 has 12 divisors (see below), whose sum is σ = 89359379594856. Its totient is φ = 25529860347680.

The previous prime is 51061111660477. The next prime is 51061111660499. The reversal of 51061111660492 is 29406611116015.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51061111660499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173705434 + ... + 173999137.

It is an arithmetic number, because the mean of its divisors is an integer number (7446614966238).

Almost surely, 2^{51061111660492} is an apocalyptic number.

It is an amenable number.

51061111660492 is a deficient number, since it is larger than the sum of its proper divisors (38298267934364).

51061111660492 is a wasteful number, since it uses less digits than its factorization.

51061111660492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347741288 (or 347741286 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 51061111660492 in words is "fifty-one trillion, sixty-one billion, one hundred eleven million, six hundred sixty thousand, four hundred ninety-two".