747792138240 has 2048 divisors, whose sum is σ = 3382235136000. Its totient is φ = 152882380800.

The previous prime is 747792138217. The next prime is 747792138283. The reversal of 747792138240 is 42831297747.

747792138240 is a `hidden beast` number, since 7 + 477 + 92 + 1 + 3 + 82 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2048).

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

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, 18238832620 + ... + 18238832660.

It is an arithmetic number, because the mean of its divisors is an integer number (1651482000).

Almost surely, 2^747792138240 is an apocalyptic number.

747792138240 is a gapful number since it is divisible by the number (70) 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 747792138240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1691117568000).

747792138240 is an abundant number, since it is smaller than the sum of its proper divisors (2634442997760).

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

747792138240 is a wasteful number, since it uses less digits than its factorization.

747792138240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 747792138240 in words is "seven hundred forty-seven billion, seven hundred ninety-two million, one hundred thirty-eight thousand, two hundred forty".