74939718480 has 160 divisors (see below), whose sum is σ = 257728504320. Its totient is φ = 17859248640.

The previous prime is 74939718479. The next prime is 74939718481. The reversal of 74939718480 is 8481793947.

It is an interprime number because it is at equal distance from previous prime (74939718479) and next prime (74939718481).

It is a super-2 number, since 2×74939718480² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74939718481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84802 + ... + 396321.

It is an arithmetic number, because the mean of its divisors is an integer number (1610803152).

Almost surely, 2^74939718480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74939718480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128864252160).

74939718480 is an abundant number, since it is smaller than the sum of its proper divisors (182788785840).

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

74939718480 is a wasteful number, since it uses less digits than its factorization.

74939718480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481209 (or 481203 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 74939718480 in words is "seventy-four billion, nine hundred thirty-nine million, seven hundred eighteen thousand, four hundred eighty".