15551545512000 has 112 divisors (see below), whose sum is σ = 51351203359872. Its totient is φ = 4147078796800.

The previous prime is 15551545511947. The next prime is 15551545512017. The reversal of 15551545512000 is 21554515551.

It is a self number, because there is not a number n which added to its sum of digits gives 15551545512000.

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, 323966532 + ... + 324014531.

Almost surely, 2^{15551545512000} is an apocalyptic number.

15551545512000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15551545512000 is an abundant number, since it is smaller than the sum of its proper divisors (35799657847872).

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

15551545512000 is an equidigital number, since it uses as much as digits as its factorization.

15551545512000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647981093 (or 647981073 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 39.

The spelling of 15551545512000 in words is "fifteen trillion, five hundred fifty-one billion, five hundred forty-five million, five hundred twelve thousand".