74401665736 has 64 divisors (see below), whose sum is σ = 154116950400. Its totient is φ = 33515463168.

The previous prime is 74401665733. The next prime is 74401665743. The reversal of 74401665736 is 63756610447.

It is a self number, because there is not a number n which added to its sum of digits gives 74401665736.

It is not an unprimeable number, because it can be changed into a prime (74401665733) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 543300 + ... + 666316.

It is an arithmetic number, because the mean of its divisors is an integer number (2408077350).

Almost surely, 2^74401665736 is an apocalyptic number.

74401665736 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

74401665736 is an abundant number, since it is smaller than the sum of its proper divisors (79715284664).

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

74401665736 is a wasteful number, since it uses less digits than its factorization.

74401665736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123238 (or 123234 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 74401665736 in words is "seventy-four billion, four hundred one million, six hundred sixty-five thousand, seven hundred thirty-six".