51416156544 has 32 divisors (see below), whose sum is σ = 136574166840. Its totient is φ = 17138718720.

The previous prime is 51416156543. The next prime is 51416156563. The reversal of 51416156544 is 44565161415.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×51416156544² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51416156496 and 51416156505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51416156543) 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, 66947737 + ... + 66948504.

Almost surely, 2^51416156544 is an apocalyptic number.

It is an amenable number.

51416156544 is an abundant number, since it is smaller than the sum of its proper divisors (85158010296).

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

51416156544 is a wasteful number, since it uses less digits than its factorization.

51416156544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133896258 (or 133896246 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 51416156544 in words is "fifty-one billion, four hundred sixteen million, one hundred fifty-six thousand, five hundred forty-four".