74699873888640 has 2048 divisors, whose sum is σ = 328682188800000. Its totient is φ = 13930876108800.

The previous prime is 74699873888639. The next prime is 74699873888683. The reversal of 74699873888640 is 4688837899647.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 9961307611 + ... + 9961315109.

It is an arithmetic number, because the mean of its divisors is an integer number (160489350000).

Almost surely, 2^{74699873888640} is an apocalyptic number.

74699873888640 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 74699873888640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164341094400000).

74699873888640 is an abundant number, since it is smaller than the sum of its proper divisors (253982314911360).

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

74699873888640 is a wasteful number, since it uses less digits than its factorization.

74699873888640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7696 (or 7684 counting only the distinct ones).

The product of its (nonzero) digits is 28092137472, while the sum is 87.

The spelling of 74699873888640 in words is "seventy-four trillion, six hundred ninety-nine billion, eight hundred seventy-three million, eight hundred eighty-eight thousand, six hundred forty".