74740415816 has 64 divisors (see below), whose sum is σ = 161983800000. Its totient is φ = 31952220160.

The previous prime is 74740415807. The next prime is 74740415819. The reversal of 74740415816 is 61851404747.

It is a super-2 number, since 2×74740415816² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74740415819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2225840 + ... + 2259168.

It is an arithmetic number, because the mean of its divisors is an integer number (2530996875).

Almost surely, 2^74740415816 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 74740415816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80991900000).

74740415816 is an abundant number, since it is smaller than the sum of its proper divisors (87243384184).

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

74740415816 is a wasteful number, since it uses less digits than its factorization.

74740415816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34862 (or 34858 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 74740415816 in words is "seventy-four billion, seven hundred forty million, four hundred fifteen thousand, eight hundred sixteen".