74737943136 has 192 divisors, whose sum is σ = 221988392640. Its totient is φ = 24764631552.

The previous prime is 74737943131. The next prime is 74737943167. The reversal of 74737943136 is 63134973747.

74737943136 is a `hidden beast` number, since 74 + 73 + 79 + 431 + 3 + 6 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74737943131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12104146 + ... + 12110318.

It is an arithmetic number, because the mean of its divisors is an integer number (1156189545).

Almost surely, 2^74737943136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74737943136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110994196320).

74737943136 is an abundant number, since it is smaller than the sum of its proper divisors (147250449504).

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

74737943136 is an equidigital number, since it uses as much as digits as its factorization.

74737943136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6351 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 54.

The spelling of 74737943136 in words is "seventy-four billion, seven hundred thirty-seven million, nine hundred forty-three thousand, one hundred thirty-six".