615506066660 has 48 divisors (see below), whose sum is σ = 1361775421440. Its totient is φ = 233041593600.

The previous prime is 615506066627. The next prime is 615506066713. The reversal of 615506066660 is 66660605516.

615506066660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 266249 + ... + 1141008.

It is an arithmetic number, because the mean of its divisors is an integer number (28370321280).

Almost surely, 2^615506066660 is an apocalyptic number.

It is an amenable number.

615506066660 is an abundant number, since it is smaller than the sum of its proper divisors (746269354780).

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

615506066660 is a wasteful number, since it uses less digits than its factorization.

615506066660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408436 (or 1408434 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 615506066660 in words is "six hundred fifteen billion, five hundred six million, sixty-six thousand, six hundred sixty".