15120553212 has 36 divisors (see below), whose sum is σ = 38276774536. Its totient is φ = 5032882080.

The previous prime is 15120553199. The next prime is 15120553249. The reversal of 15120553212 is 21235502151.

15120553212 is a `hidden beast` number, since 1 + 5 + 120 + 5 + 532 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×15120553212² (a number of 21 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 11 ways as a sum of consecutive naturals, for example, 279043 + ... + 328794.

Almost surely, 2^15120553212 is an apocalyptic number.

15120553212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15120553212 is an abundant number, since it is smaller than the sum of its proper divisors (23156221324).

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

15120553212 is a wasteful number, since it uses less digits than its factorization.

15120553212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608538 (or 608533 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 15120553212 in words is "fifteen billion, one hundred twenty million, five hundred fifty-three thousand, two hundred twelve".