74351541656 has 64 divisors (see below), whose sum is σ = 164902176000. Its totient is φ = 30750572160.

The previous prime is 74351541623. The next prime is 74351541679. The reversal of 74351541656 is 65614515347.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 74351541656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528191 + ... + 3549201.

It is an arithmetic number, because the mean of its divisors is an integer number (2576596500).

Almost surely, 2^74351541656 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 74351541656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82451088000).

74351541656 is an abundant number, since it is smaller than the sum of its proper divisors (90550634344).

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

74351541656 is a wasteful number, since it uses less digits than its factorization.

74351541656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23232 (or 23228 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 47.

The spelling of 74351541656 in words is "seventy-four billion, three hundred fifty-one million, five hundred forty-one thousand, six hundred fifty-six".