390661295275 has 24 divisors (see below), whose sum is σ = 496330357824. Its totient is φ = 304847865600.

The previous prime is 390661295251. The next prime is 390661295279. The reversal of 390661295275 is 572592166093.

It is not a de Polignac number, because 390661295275 - 2²¹ = 390659198123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390661295279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5754429 + ... + 5821921.

It is an arithmetic number, because the mean of its divisors is an integer number (20680431576).

Almost surely, 2^390661295275 is an apocalyptic number.

390661295275 is a deficient number, since it is larger than the sum of its proper divisors (105669062549).

390661295275 is a wasteful number, since it uses less digits than its factorization.

390661295275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73191 (or 73186 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 390661295275 in words is "three hundred ninety billion, six hundred sixty-one million, two hundred ninety-five thousand, two hundred seventy-five".