161212015552 has 28 divisors (see below), whose sum is σ = 365605822000. Its totient is φ = 69090863616.

The previous prime is 161212015543. The next prime is 161212015561. The reversal of 161212015552 is 255510212161.

161212015552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161212015543) and next prime (161212015561).

It is a tau number, because it is divible by the number of its divisors (28).

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, 179923677 + ... + 179924572.

Almost surely, 2^161212015552 is an apocalyptic number.

It is an amenable number.

161212015552 is an abundant number, since it is smaller than the sum of its proper divisors (204393806448).

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

161212015552 is an equidigital number, since it uses as much as digits as its factorization.

161212015552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359848268 (or 359848258 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 161212015552 in words is "one hundred sixty-one billion, two hundred twelve million, fifteen thousand, five hundred fifty-two".