74870939520 has 1024 divisors, whose sum is σ = 305815910400. Its totient is φ = 17167417344.

The previous prime is 74870939519. The next prime is 74870939551. The reversal of 74870939520 is 2593907847.

74870939520 is a `hidden beast` number, since 7 + 4 + 87 + 0 + 9 + 39 + 520 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 222168792 + ... + 222169128.

It is an arithmetic number, because the mean of its divisors is an integer number (298648350).

Almost surely, 2^74870939520 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 74870939520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152907955200).

74870939520 is an abundant number, since it is smaller than the sum of its proper divisors (230944970880).

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

74870939520 is a wasteful number, since it uses less digits than its factorization.

74870939520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 74870939520 in words is "seventy-four billion, eight hundred seventy million, nine hundred thirty-nine thousand, five hundred twenty".