11457511970 has 16 divisors (see below), whose sum is σ = 20625003000. Its totient is φ = 4582675584.

The previous prime is 11457511969. The next prime is 11457511999. The reversal of 11457511970 is 7911575411.

It can be written as a sum of positive squares in 4 ways, for example, as 2498700169 + 8958811801 = 49987^2 + 94651^2 .

It is a Curzon 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, 145214 + ... + 209766.

Almost surely, 2^11457511970 is an apocalyptic number.

11457511970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11457511970 is a deficient number, since it is larger than the sum of its proper divisors (9167491030).

11457511970 is a wasteful number, since it uses less digits than its factorization.

11457511970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82309.

The product of its (nonzero) digits is 44100, while the sum is 41.

The spelling of 11457511970 in words is "eleven billion, four hundred fifty-seven million, five hundred eleven thousand, nine hundred seventy".