665201464090 has 16 divisors (see below), whose sum is σ = 1199926589472. Its totient is φ = 265510818064.

The previous prime is 665201464021. The next prime is 665201464097. The reversal of 665201464090 is 90464102566.

It is not an unprimeable number, because it can be changed into a prime (665201464097) 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, 71216044 + ... + 71225383.

It is an arithmetic number, because the mean of its divisors is an integer number (74995411842).

Almost surely, 2^665201464090 is an apocalyptic number.

665201464090 is a deficient number, since it is larger than the sum of its proper divisors (534725125382).

665201464090 is a wasteful number, since it uses less digits than its factorization.

665201464090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142441901.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 665201464090 in words is "six hundred sixty-five billion, two hundred one million, four hundred sixty-four thousand, ninety".