7738807474636 has 96 divisors (see below), whose sum is σ = 15984093052928. Its totient is φ = 3209666160960.

The previous prime is 7738807474613. The next prime is 7738807474639. The reversal of 7738807474636 is 6364747088377.

It is a happy number.

It is a super-2 number, since 2×7738807474636² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7738807474639) 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, 56583511 + ... + 56720113.

Almost surely, 2^{7738807474636} 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 7738807474636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7992046526464).

7738807474636 is an abundant number, since it is smaller than the sum of its proper divisors (8245285578292).

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

7738807474636 is a wasteful number, since it uses less digits than its factorization.

7738807474636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137091 (or 137089 counting only the distinct ones).

The product of its (nonzero) digits is 796594176, while the sum is 70.

The spelling of 7738807474636 in words is "seven trillion, seven hundred thirty-eight billion, eight hundred seven million, four hundred seventy-four thousand, six hundred thirty-six".