74539745280 has 1440 divisors, whose sum is σ = 350373074688. Its totient is φ = 14155776000.

The previous prime is 74539745251. The next prime is 74539745311. The reversal of 74539745280 is 8254793547.

It is a happy number.

74539745280 is a `hidden beast` number, since 7 + 45 + 3 + 9 + 74 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 738017230 + ... + 738017330.

Almost surely, 2^74539745280 is an apocalyptic number.

74539745280 is a gapful number since it is divisible by the number (70) 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 74539745280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175186537344).

74539745280 is an abundant number, since it is smaller than the sum of its proper divisors (275833329408).

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

74539745280 is a wasteful number, since it uses less digits than its factorization.

74539745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 74539745280 in words is "seventy-four billion, five hundred thirty-nine million, seven hundred forty-five thousand, two hundred eighty".