7881074136 has 96 divisors (see below), whose sum is σ = 23420320560. Its totient is φ = 2379177216.

The previous prime is 7881074119. The next prime is 7881074141. The reversal of 7881074136 is 6314701887.

It is a super-2 number, since 2×7881074136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7881074091 and 7881074100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29826 + ... + 129041.

Almost surely, 2^7881074136 is an apocalyptic number.

It is an amenable number.

7881074136 is an abundant number, since it is smaller than the sum of its proper divisors (15539246424).

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

7881074136 is a wasteful number, since it uses less digits than its factorization.

7881074136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158945 (or 158938 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 7881074136 is about 88775.4140288853. The cubic root of 7881074136 is about 1990.0399927991.

The spelling of 7881074136 in words is "seven billion, eight hundred eighty-one million, seventy-four thousand, one hundred thirty-six".