253565040660 has 24 divisors (see below), whose sum is σ = 709982114016. Its totient is φ = 67617344160.

The previous prime is 253565040643. The next prime is 253565040719. The reversal of 253565040660 is 66040565352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2113041946 + ... + 2113042065.

It is an arithmetic number, because the mean of its divisors is an integer number (29582588084).

Almost surely, 2^253565040660 is an apocalyptic number.

253565040660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253565040660 is an abundant number, since it is smaller than the sum of its proper divisors (456417073356).

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

253565040660 is a wasteful number, since it uses less digits than its factorization.

253565040660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226084023 (or 4226084021 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 253565040660 in words is "two hundred fifty-three billion, five hundred sixty-five million, forty thousand, six hundred sixty".