74729694085620 has 384 divisors, whose sum is σ = 254983091650560. Its totient is φ = 15973379781120.

The previous prime is 74729694085493. The next prime is 74729694085663. The reversal of 74729694085620 is 2658049692747.

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, 255477169 + ... + 255769511.

It is an arithmetic number, because the mean of its divisors is an integer number (664018467840).

Almost surely, 2^{74729694085620} is an apocalyptic number.

74729694085620 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 74729694085620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127491545825280).

74729694085620 is an abundant number, since it is smaller than the sum of its proper divisors (180253397564940).

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

74729694085620 is a wasteful number, since it uses less digits than its factorization.

74729694085620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292795 (or 292793 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 69.

The spelling of 74729694085620 in words is "seventy-four trillion, seven hundred twenty-nine billion, six hundred ninety-four million, eighty-five thousand, six hundred twenty".