51100364854520 has 128 divisors (see below), whose sum is σ = 122641093612800. Its totient is φ = 19106715995136.

The previous prime is 51100364854417. The next prime is 51100364854579. The reversal of 51100364854520 is 2545846300115.

It is a super-2 number, since 2×51100364854520² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49129292 + ... + 50158628.

It is an arithmetic number, because the mean of its divisors is an integer number (958133543850).

Almost surely, 2^{51100364854520} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51100364854520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61320546806400).

51100364854520 is an abundant number, since it is smaller than the sum of its proper divisors (71540728758280).

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

51100364854520 is a wasteful number, since it uses less digits than its factorization.

51100364854520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030237 (or 1030233 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 51100364854520 in words is "fifty-one trillion, one hundred billion, three hundred sixty-four million, eight hundred fifty-four thousand, five hundred twenty".