15055552512 has 1024 divisors, whose sum is σ = 63416908800. Its totient is φ = 3397386240.

The previous prime is 15055552511. The next prime is 15055552553. The reversal of 15055552512 is 21525555051.

15055552512 is a `hidden beast` number, since 1 + 5 + 0 + 55 + 552 + 51 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1024).

It is a super-3 number, since 3×15055552512³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15055552511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 885620728 + ... + 885620744.

It is an arithmetic number, because the mean of its divisors is an integer number (61930575).

Almost surely, 2^15055552512 is an apocalyptic number.

15055552512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15055552512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31708454400).

15055552512 is an abundant number, since it is smaller than the sum of its proper divisors (48361356288).

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

15055552512 is a wasteful number, since it uses less digits than its factorization.

15055552512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 36.

The spelling of 15055552512 in words is "fifteen billion, fifty-five million, five hundred fifty-two thousand, five hundred twelve".