74015534868 has 96 divisors (see below), whose sum is σ = 194184732672. Its totient is φ = 21747398400.

The previous prime is 74015534861. The next prime is 74015534893. The reversal of 74015534868 is 86843551047.

It is a super-2 number, since 2×74015534868² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74015534868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74015534861) 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, 840205 + ... + 924107.

It is an arithmetic number, because the mean of its divisors is an integer number (2022757632).

Almost surely, 2^74015534868 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 74015534868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97092366336).

74015534868 is an abundant number, since it is smaller than the sum of its proper divisors (120169197804).

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

74015534868 is a wasteful number, since it uses less digits than its factorization.

74015534868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84125 (or 84123 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 74015534868 in words is "seventy-four billion, fifteen million, five hundred thirty-four thousand, eight hundred sixty-eight".