76661016667 has 16 divisors (see below), whose sum is σ = 79185083904. Its totient is φ = 74176380000.

The previous prime is 76661016643. The next prime is 76661016683.

76661016667 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76661016667 is a prime.

It is a super-2 number, since 2×76661016667² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76661016697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3268492 + ... + 3291862.

It is an arithmetic number, because the mean of its divisors is an integer number (4949067744).

Almost surely, 2^76661016667 is an apocalyptic number.

76661016667 is a deficient number, since it is larger than the sum of its proper divisors (2524067237).

76661016667 is a wasteful number, since it uses less digits than its factorization.

76661016667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24210.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 76661016667 in words is "seventy-six billion, six hundred sixty-one million, sixteen thousand, six hundred sixty-seven".