74947371408 has 480 divisors, whose sum is σ = 265508006400. Its totient is φ = 19610035200.

The previous prime is 74947371407. The next prime is 74947371427. The reversal of 74947371408 is 80417374947.

74947371408 is a `hidden beast` number, since 7 + 494 + 7 + 3 + 7 + 140 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (74947371407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96956110 + ... + 96956882.

It is an arithmetic number, because the mean of its divisors is an integer number (553141680).

Almost surely, 2^74947371408 is an apocalyptic number.

74947371408 is a gapful number since it is divisible by the number (78) 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 74947371408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132754003200).

74947371408 is an abundant number, since it is smaller than the sum of its proper divisors (190560634992).

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

74947371408 is a wasteful number, since it uses less digits than its factorization.

74947371408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 949 counting only the distinct ones).

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

The spelling of 74947371408 in words is "seventy-four billion, nine hundred forty-seven million, three hundred seventy-one thousand, four hundred eight".