7667639955 has 16 divisors (see below), whose sum is σ = 13631360160. Its totient is φ = 4089407904.

The previous prime is 7667639939. The next prime is 7667639983. The reversal of 7667639955 is 5599367667.

It is not a de Polignac number, because 7667639955 - 2⁴ = 7667639939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7667639892 and 7667639901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28398532 + ... + 28398801.

It is an arithmetic number, because the mean of its divisors is an integer number (851960010).

Almost surely, 2^7667639955 is an apocalyptic number.

7667639955 is a deficient number, since it is larger than the sum of its proper divisors (5963720205).

7667639955 is a wasteful number, since it uses less digits than its factorization.

7667639955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56797347 (or 56797341 counting only the distinct ones).

The product of its digits is 64297800, while the sum is 63.

The square root of 7667639955 is about 87565.0612687503. The cubic root of 7667639955 is about 1971.9106712872.

The spelling of 7667639955 in words is "seven billion, six hundred sixty-seven million, six hundred thirty-nine thousand, nine hundred fifty-five".