253205542136 has 32 divisors (see below), whose sum is σ = 475300794240. Its totient is φ = 126458760288.

The previous prime is 253205542129. The next prime is 253205542211. The reversal of 253205542136 is 631245502352.

It is a super-2 number, since 2×253205542136² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253205542136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31167371 + ... + 31175493.

It is an arithmetic number, because the mean of its divisors is an integer number (14853149820).

Almost surely, 2^253205542136 is an apocalyptic number.

It is an amenable number.

253205542136 is a deficient number, since it is larger than the sum of its proper divisors (222095252104).

253205542136 is a wasteful number, since it uses less digits than its factorization.

253205542136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12083 (or 12079 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 253205542136 in words is "two hundred fifty-three billion, two hundred five million, five hundred forty-two thousand, one hundred thirty-six".