3678550117581 has 8 divisors (see below), whose sum is σ = 4966818724480. Its totient is φ = 2421324127872.

The previous prime is 3678550117483. The next prime is 3678550117597. The reversal of 3678550117581 is 1857110558763.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3678550117581 - 2²⁷ = 3678415899853 is a prime.

It is a super-2 number, since 2×3678550117581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678550117181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7760654020 + ... + 7760654493.

It is an arithmetic number, because the mean of its divisors is an integer number (620852340560).

Almost surely, 2^{3678550117581} is an apocalyptic number.

It is an amenable number.

3678550117581 is a deficient number, since it is larger than the sum of its proper divisors (1288268606899).

3678550117581 is a wasteful number, since it uses less digits than its factorization.

3678550117581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521308595.

The product of its (nonzero) digits is 7056000, while the sum is 57.

The spelling of 3678550117581 in words is "three trillion, six hundred seventy-eight billion, five hundred fifty million, one hundred seventeen thousand, five hundred eighty-one".