253730663340 has 96 divisors (see below), whose sum is σ = 885750695424. Its totient is φ = 52723253760.

The previous prime is 253730663339. The next prime is 253730663399. The reversal of 253730663340 is 43366037352.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 253730663292 and 253730663301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27455409 + ... + 27464648.

It is an arithmetic number, because the mean of its divisors is an integer number (9226569744).

Almost surely, 2^253730663340 is an apocalyptic number.

253730663340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253730663340 is an abundant number, since it is smaller than the sum of its proper divisors (632020032084).

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

253730663340 is a wasteful number, since it uses less digits than its factorization.

253730663340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54920087 (or 54920085 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 42.

The spelling of 253730663340 in words is "two hundred fifty-three billion, seven hundred thirty million, six hundred sixty-three thousand, three hundred forty".