164512261560 has 64 divisors (see below), whose sum is σ = 494404365600. Its totient is φ = 43792818176.

The previous prime is 164512261547. The next prime is 164512261579. The reversal of 164512261560 is 65162215461.

It is a congruent number.

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, 1136409 + ... + 1272968.

Almost surely, 2^164512261560 is an apocalyptic number.

164512261560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164512261560 is an abundant number, since it is smaller than the sum of its proper divisors (329892104040).

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

164512261560 is a wasteful number, since it uses less digits than its factorization.

164512261560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409960 (or 2409956 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 164512261560 in words is "one hundred sixty-four billion, five hundred twelve million, two hundred sixty-one thousand, five hundred sixty".