123660087894 has 24 divisors (see below), whose sum is σ = 306205932240. Its totient is φ = 35331453648.

The previous prime is 123660087877. The next prime is 123660087919. The reversal of 123660087894 is 498780066321.

123660087894 is a `hidden beast` number, since 1 + 23 + 6 + 600 + 8 + 7 + 8 + 9 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123660087894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490714509 + ... + 490714760.

It is an arithmetic number, because the mean of its divisors is an integer number (12758580510).

Almost surely, 2^123660087894 is an apocalyptic number.

123660087894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123660087894 is an abundant number, since it is smaller than the sum of its proper divisors (182545844346).

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

123660087894 is a wasteful number, since it uses less digits than its factorization.

123660087894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981429284 (or 981429281 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 123660087894 in words is "one hundred twenty-three billion, six hundred sixty million, eighty-seven thousand, eight hundred ninety-four".