7950791661 has 32 divisors (see below), whose sum is σ = 11413923840. Its totient is φ = 4907582784.

The previous prime is 7950791621. The next prime is 7950791671. The reversal of 7950791661 is 1661970597.

It is not a de Polignac number, because 7950791661 - 2¹⁹ = 7950267373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7950791621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 789520 + ... + 799526.

It is an arithmetic number, because the mean of its divisors is an integer number (356685120).

Almost surely, 2^7950791661 is an apocalyptic number.

It is an amenable number.

7950791661 is a deficient number, since it is larger than the sum of its proper divisors (3463132179).

7950791661 is a wasteful number, since it uses less digits than its factorization.

7950791661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345.

The product of its (nonzero) digits is 714420, while the sum is 51.

The square root of 7950791661 is about 89167.2118045641. The cubic root of 7950791661 is about 1995.8908683839.

The spelling of 7950791661 in words is "seven billion, nine hundred fifty million, seven hundred ninety-one thousand, six hundred sixty-one".