51455936898 has 12 divisors (see below), whose sum is σ = 111487863318. Its totient is φ = 17151978960.

The previous prime is 51455936869. The next prime is 51455936911. The reversal of 51455936898 is 89863955415.

51455936898 is a `hidden beast` number, since 5 + 1 + 455 + 93 + 6 + 8 + 98 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49059149049 + 2396787849 = 221493^2 + 48957^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1429331563 + ... + 1429331598.

Almost surely, 2^51455936898 is an apocalyptic number.

51455936898 is an abundant number, since it is smaller than the sum of its proper divisors (60031926420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51455936898 is a wasteful number, since it uses less digits than its factorization.

51455936898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858663169 (or 2858663166 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 63.

The spelling of 51455936898 in words is "fifty-one billion, four hundred fifty-five million, nine hundred thirty-six thousand, eight hundred ninety-eight".