51102250368 has 64 divisors (see below), whose sum is σ = 146181932400. Its totient is φ = 15723767808.

The previous prime is 51102250301. The next prime is 51102250369. The reversal of 51102250368 is 86305220115.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×51102250368² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102250369) 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, 5113423 + ... + 5123406.

Almost surely, 2^51102250368 is an apocalyptic number.

It is an amenable number.

51102250368 is an abundant number, since it is smaller than the sum of its proper divisors (95079682032).

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

51102250368 is a wasteful number, since it uses less digits than its factorization.

51102250368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236859 (or 10236847 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 51102250368 in words is "fifty-one billion, one hundred two million, two hundred fifty thousand, three hundred sixty-eight".