74899147680 has 576 divisors, whose sum is σ = 304239027456. Its totient is φ = 16422912000.

The previous prime is 74899147679. The next prime is 74899147681. The reversal of 74899147680 is 8674199847.

74899147680 is a `hidden beast` number, since 7 + 4 + 89 + 9 + 1 + 476 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (74899147679) and next prime (74899147681).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (74899147681) 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, 25208595 + ... + 25211565.

It is an arithmetic number, because the mean of its divisors is an integer number (528192756).

Almost surely, 2^74899147680 is an apocalyptic number.

74899147680 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 74899147680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152119513728).

74899147680 is an abundant number, since it is smaller than the sum of its proper divisors (229339879776).

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

74899147680 is a wasteful number, since it uses less digits than its factorization.

74899147680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101 (or 3090 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 74899147680 in words is "seventy-four billion, eight hundred ninety-nine million, one hundred forty-seven thousand, six hundred eighty".