123239971764 has 72 divisors (see below), whose sum is σ = 383413255680. Its totient is φ = 32502848832.

The previous prime is 123239971753. The next prime is 123239971769. The reversal of 123239971764 is 467179932321.

123239971764 is a `hidden beast` number, since 1 + 232 + 399 + 7 + 17 + 6 + 4 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123239971764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123239971769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18806244 + ... + 18812795.

Almost surely, 2^123239971764 is an apocalyptic number.

123239971764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123239971764 is an abundant number, since it is smaller than the sum of its proper divisors (260173283916).

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

123239971764 is a wasteful number, since it uses less digits than its factorization.

123239971764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37619069 (or 37619064 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The spelling of 123239971764 in words is "one hundred twenty-three billion, two hundred thirty-nine million, nine hundred seventy-one thousand, seven hundred sixty-four".