74671994880 has 672 divisors, whose sum is σ = 307221314400. Its totient is φ = 17055940608.

The previous prime is 74671994869. The next prime is 74671994893. The reversal of 74671994880 is 8849917647.

74671994880 is a `hidden beast` number, since 7 + 4 + 67 + 1 + 99 + 488 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 52254006 + ... + 52255434.

It is an arithmetic number, because the mean of its divisors is an integer number (457174575).

Almost surely, 2^74671994880 is an apocalyptic number.

74671994880 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 74671994880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153610657200).

74671994880 is an abundant number, since it is smaller than the sum of its proper divisors (232549319520).

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

74671994880 is an equidigital number, since it uses as much as digits as its factorization.

74671994880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1446 counting only the distinct ones).

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

The spelling of 74671994880 in words is "seventy-four billion, six hundred seventy-one million, nine hundred ninety-four thousand, eight hundred eighty".