74685969792 has 384 divisors, whose sum is σ = 255203020800. Its totient is φ = 20515368960.

The previous prime is 74685969791. The next prime is 74685969811. The reversal of 74685969792 is 29796958647.

74685969792 is a `hidden beast` number, since 7 + 468 + 5 + 96 + 9 + 79 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 74685969792.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74685969791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41746434 + ... + 41748222.

It is an arithmetic number, because the mean of its divisors is an integer number (664591200).

Almost surely, 2^74685969792 is an apocalyptic number.

74685969792 is a gapful number since it is divisible by the number (72) 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 74685969792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127601510400).

74685969792 is an abundant number, since it is smaller than the sum of its proper divisors (180517051008).

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

74685969792 is a wasteful number, since it uses less digits than its factorization.

74685969792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014 (or 1999 counting only the distinct ones).

The product of its digits is 411505920, while the sum is 72.

The spelling of 74685969792 in words is "seventy-four billion, six hundred eighty-five million, nine hundred sixty-nine thousand, seven hundred ninety-two".