7661667007616 has 32 divisors (see below), whose sum is σ = 15288874195980. Its totient is φ = 3824459366400.

The previous prime is 7661667007609. The next prime is 7661667007717. The reversal of 7661667007616 is 6167007661667.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7644694129216 + 16972878400 = 2764904^2 + 130280^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×7661667007616² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49720721 + ... + 49874576.

Almost surely, 2^{7661667007616} is an apocalyptic number.

It is an amenable number.

7661667007616 is a deficient number, since it is larger than the sum of its proper divisors (7627207188364).

7661667007616 is an equidigital number, since it uses as much as digits as its factorization.

7661667007616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99595912 (or 99595900 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 59.

The spelling of 7661667007616 in words is "seven trillion, six hundred sixty-one billion, six hundred sixty-seven million, seven thousand, six hundred sixteen".