27664376676 has 24 divisors (see below), whose sum is σ = 64877883840. Its totient is φ = 9174648672.

The previous prime is 27664376653. The next prime is 27664376687. The reversal of 27664376676 is 67667346672.

It is a happy number.

It is a super-2 number, since 2×27664376676² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5848816 + ... + 5853543.

It is an arithmetic number, because the mean of its divisors is an integer number (2703245160).

Almost surely, 2^27664376676 is an apocalyptic number.

It is an amenable number.

27664376676 is an abundant number, since it is smaller than the sum of its proper divisors (37213507164).

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

27664376676 is a wasteful number, since it uses less digits than its factorization.

27664376676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11702563 (or 11702561 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 60.

The spelling of 27664376676 in words is "twenty-seven billion, six hundred sixty-four million, three hundred seventy-six thousand, six hundred seventy-six".