664598412155 has 16 divisors (see below), whose sum is σ = 808107874560. Its totient is φ = 524634450528.

The previous prime is 664598412133. The next prime is 664598412169. The reversal of 664598412155 is 551214895466.

It is a cyclic number.

It is not a de Polignac number, because 664598412155 - 2¹² = 664598408059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664598412155.

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, 631385 + ... + 1314474.

It is an arithmetic number, because the mean of its divisors is an integer number (50506742160).

Almost surely, 2^664598412155 is an apocalyptic number.

664598412155 is a deficient number, since it is larger than the sum of its proper divisors (143509462405).

664598412155 is a wasteful number, since it uses less digits than its factorization.

664598412155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946770.

The product of its digits is 10368000, while the sum is 56.

The spelling of 664598412155 in words is "six hundred sixty-four billion, five hundred ninety-eight million, four hundred twelve thousand, one hundred fifty-five".