15120455552 has 32 divisors (see below), whose sum is σ = 30188813520. Its totient is φ = 7543655424.

The previous prime is 15120455491. The next prime is 15120455591. The reversal of 15120455552 is 25555402151.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-4 number, since 4×15120455552⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70748 + ... + 187739.

Almost surely, 2^15120455552 is an apocalyptic number.

It is an amenable number.

15120455552 is a deficient number, since it is larger than the sum of its proper divisors (15068357968).

15120455552 is an equidigital number, since it uses as much as digits as its factorization.

15120455552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258958 (or 258946 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 15120455552 in words is "fifteen billion, one hundred twenty million, four hundred fifty-five thousand, five hundred fifty-two".