747822136320 has 1408 divisors, whose sum is σ = 3179910021120. Its totient is φ = 163074539520.

The previous prime is 747822136279. The next prime is 747822136349. The reversal of 747822136320 is 23631228747.

747822136320 is a `hidden beast` number, since 7 + 4 + 7 + 8 + 2 + 2 + 1 + 3 + 632 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2909813632 + ... + 2909813888.

Almost surely, 2^747822136320 is an apocalyptic number.

747822136320 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 747822136320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589955010560).

747822136320 is an abundant number, since it is smaller than the sum of its proper divisors (2432087884800).

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

747822136320 is a wasteful number, since it uses less digits than its factorization.

747822136320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 747822136320 in words is "seven hundred forty-seven billion, eight hundred twenty-two million, one hundred thirty-six thousand, three hundred twenty".