123369704640 has 896 divisors, whose sum is σ = 539346769920. Its totient is φ = 25850658816.

The previous prime is 123369704639. The next prime is 123369704693. The reversal of 123369704640 is 46407963321.

123369704640 is a `hidden beast` number, since 123 + 3 + 69 + 7 + 0 + 464 + 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 127 ways as a sum of consecutive naturals, for example, 136019067 + ... + 136019973.

It is an arithmetic number, because the mean of its divisors is an integer number (601949520).

Almost surely, 2^123369704640 is an apocalyptic number.

123369704640 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 123369704640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269673384960).

123369704640 is an abundant number, since it is smaller than the sum of its proper divisors (415977065280).

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

123369704640 is a wasteful number, since it uses less digits than its factorization.

123369704640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 123369704640 in words is "one hundred twenty-three billion, three hundred sixty-nine million, seven hundred four thousand, six hundred forty".