51281635046 has 16 divisors (see below), whose sum is σ = 79731634176. Its totient is φ = 24720708936.

The previous prime is 51281635033. The next prime is 51281635051. The reversal of 51281635046 is 64053618215.

It is a super-2 number, since 2×51281635046² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51281634994 and 51281635012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4064966 + ... + 4077561.

It is an arithmetic number, because the mean of its divisors is an integer number (4983227136).

Almost surely, 2^51281635046 is an apocalyptic number.

51281635046 is a deficient number, since it is larger than the sum of its proper divisors (28449999130).

51281635046 is a wasteful number, since it uses less digits than its factorization.

51281635046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8142643.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 51281635046 in words is "fifty-one billion, two hundred eighty-one million, six hundred thirty-five thousand, forty-six".