612155185516 has 24 divisors (see below), whose sum is σ = 1224447803936. Its totient is φ = 262322772480.

The previous prime is 612155185513. The next prime is 612155185541. The reversal of 612155185516 is 615581551216.

612155185516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (612155185511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972261 + ... + 1472956.

Almost surely, 2^612155185516 is an apocalyptic number.

It is an amenable number.

612155185516 is an abundant number, since it is smaller than the sum of its proper divisors (612292618420).

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

612155185516 is a wasteful number, since it uses less digits than its factorization.

612155185516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454169 (or 2454167 counting only the distinct ones).

The product of its digits is 360000, while the sum is 46.

The spelling of 612155185516 in words is "six hundred twelve billion, one hundred fifty-five million, one hundred eighty-five thousand, five hundred sixteen".