123397956000 has 576 divisors, whose sum is σ = 479746665216. Its totient is φ = 29789952000.

The previous prime is 123397955927. The next prime is 123397956043. The reversal of 123397956000 is 659793321.

123397956000 is a `hidden beast` number, since 1 + 2 + 3 + 39 + 7 + 9 + 5 + 600 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 125531509 + ... + 125532491.

It is an arithmetic number, because the mean of its divisors is an integer number (832893516).

Almost surely, 2^123397956000 is an apocalyptic number.

123397956000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123397956000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239873332608).

123397956000 is an abundant number, since it is smaller than the sum of its proper divisors (356348709216).

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

123397956000 is a wasteful number, since it uses less digits than its factorization.

123397956000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The spelling of 123397956000 in words is "one hundred twenty-three billion, three hundred ninety-seven million, nine hundred fifty-six thousand".