51105655400458 has 24 divisors (see below), whose sum is σ = 77507667465228. Its totient is φ = 25272394339968.

The previous prime is 51105655400411. The next prime is 51105655400543. The reversal of 51105655400458 is 85400455650115.

It can be written as a sum of positive squares in 6 ways, for example, as 4845620430729 + 46260034969729 = 2201277^2 + 6801473^2 .

It is a super-2 number, since 2×51105655400458² (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 11 ways as a sum of consecutive naturals, for example, 7875760 + ... + 12815572.

Almost surely, 2^{51105655400458} is an apocalyptic number.

51105655400458 is a deficient number, since it is larger than the sum of its proper divisors (26402012064770).

51105655400458 is a wasteful number, since it uses less digits than its factorization.

51105655400458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940346 (or 4940197 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 49.

The spelling of 51105655400458 in words is "fifty-one trillion, one hundred five billion, six hundred fifty-five million, four hundred thousand, four hundred fifty-eight".