55151605512 has 128 divisors (see below), whose sum is σ = 154695744000. Its totient is φ = 18205128000.

The previous prime is 55151605507. The next prime is 55151605583. The reversal of 55151605512 is 21550615155.

55151605512 is a `hidden beast` number, since 5 + 51 + 51 + 6 + 0 + 551 + 2 = 666.

55151605512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 9701823 + ... + 9707505.

It is an arithmetic number, because the mean of its divisors is an integer number (1208560500).

Almost surely, 2^55151605512 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 55151605512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77347872000).

55151605512 is an abundant number, since it is smaller than the sum of its proper divisors (99544138488).

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

55151605512 is a wasteful number, since it uses less digits than its factorization.

55151605512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128 (or 6118 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 55151605512 in words is "fifty-five billion, one hundred fifty-one million, six hundred five thousand, five hundred twelve".