51061111660493 has 8 divisors (see below), whose sum is σ = 55731611239200. Its totient is φ = 46395375471280.

The previous prime is 51061111660477. The next prime is 51061111660499. The reversal of 51061111660493 is 39406611116015.

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

It is not a de Polignac number, because 51061111660493 - 2⁴ = 51061111660477 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1190824955 + ... + 1190867832.

It is an arithmetic number, because the mean of its divisors is an integer number (6966451404900).

Almost surely, 2^{51061111660493} is an apocalyptic number.

It is an amenable number.

51061111660493 is a deficient number, since it is larger than the sum of its proper divisors (4670499578707).

51061111660493 is a wasteful number, since it uses less digits than its factorization.

51061111660493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381694747.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 51061111660493 in words is "fifty-one trillion, sixty-one billion, one hundred eleven million, six hundred sixty thousand, four hundred ninety-three".