7955676581 has 4 divisors (see below), whose sum is σ = 7977837600. Its totient is φ = 7933515564.

The previous prime is 7955676569. The next prime is 7955676607. The reversal of 7955676581 is 1856765597.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7955676581 is a prime.

It is a super-2 number, since 2×7955676581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7955676581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7955676481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11079971 + ... + 11080688.

It is an arithmetic number, because the mean of its divisors is an integer number (1994459400).

Almost surely, 2^7955676581 is an apocalyptic number.

It is an amenable number.

7955676581 is a deficient number, since it is larger than the sum of its proper divisors (22161019).

7955676581 is a wasteful number, since it uses less digits than its factorization.

7955676581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22161018.

The product of its digits is 15876000, while the sum is 59.

The square root of 7955676581 is about 89194.5995057997. The cubic root of 7955676581 is about 1996.2995392678.

The spelling of 7955676581 in words is "seven billion, nine hundred fifty-five million, six hundred seventy-six thousand, five hundred eighty-one".