123049187964 has 48 divisors (see below), whose sum is σ = 329307274240. Its totient is φ = 39693285360.

The previous prime is 123049187929. The next prime is 123049187981. The reversal of 123049187964 is 469781940321.

123049187964 is a `hidden beast` number, since 1 + 23 + 0 + 491 + 8 + 79 + 64 = 666.

It is a super-2 number, since 2×123049187964² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 123049187964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18373174 + ... + 18379869.

Almost surely, 2^123049187964 is an apocalyptic number.

It is an amenable number.

123049187964 is an abundant number, since it is smaller than the sum of its proper divisors (206258086276).

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

123049187964 is a wasteful number, since it uses less digits than its factorization.

123049187964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36753087 (or 36753079 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 123049187964 in words is "one hundred twenty-three billion, forty-nine million, one hundred eighty-seven thousand, nine hundred sixty-four".