74673126640 has 240 divisors, whose sum is σ = 221837944320. Its totient is φ = 23199644160.

The previous prime is 74673126623. The next prime is 74673126643. The reversal of 74673126640 is 4662137647.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74673126643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1691245 + ... + 1734835.

It is an arithmetic number, because the mean of its divisors is an integer number (924324768).

Almost surely, 2^74673126640 is an apocalyptic number.

74673126640 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 74673126640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110918972160).

74673126640 is an abundant number, since it is smaller than the sum of its proper divisors (147164817680).

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

74673126640 is a wasteful number, since it uses less digits than its factorization.

74673126640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43660 (or 43647 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 74673126640 in words is "seventy-four billion, six hundred seventy-three million, one hundred twenty-six thousand, six hundred forty".