253611036168 has 128 divisors (see below), whose sum is σ = 778306560000. Its totient is φ = 68646553920.

The previous prime is 253611036163. The next prime is 253611036169. The reversal of 253611036168 is 861630116352.

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

It is not an unprimeable number, because it can be changed into a prime (253611036163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 654328 + ... + 967143.

It is an arithmetic number, because the mean of its divisors is an integer number (6080520000).

Almost surely, 2^253611036168 is an apocalyptic number.

253611036168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

253611036168 is an abundant number, since it is smaller than the sum of its proper divisors (524695523832).

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

253611036168 is a wasteful number, since it uses less digits than its factorization.

253611036168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621520 (or 1621502 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 253611036168 in words is "two hundred fifty-three billion, six hundred eleven million, thirty-six thousand, one hundred sixty-eight".