55151510512 has 80 divisors (see below), whose sum is σ = 123939424512. Its totient is φ = 23285214720.

The previous prime is 55151510509. The next prime is 55151510591. The reversal of 55151510512 is 21501515155.

It is a happy number.

55151510512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55151510512² (a number of 22 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 15 ways as a sum of consecutive naturals, for example, 7935423 + ... + 7942369.

Almost surely, 2^55151510512 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 55151510512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61969712256).

55151510512 is an abundant number, since it is smaller than the sum of its proper divisors (68787914000).

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

55151510512 is a wasteful number, since it uses less digits than its factorization.

55151510512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006 (or 8000 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 31.

The spelling of 55151510512 in words is "fifty-five billion, one hundred fifty-one million, five hundred ten thousand, five hundred twelve".