7950953985 has 80 divisors (see below), whose sum is σ = 14037807936. Its totient is φ = 3841972992.

The previous prime is 7950953981. The next prime is 7950954007. The reversal of 7950953985 is 5893590597.

It is a happy number.

It is not a de Polignac number, because 7950953985 - 2² = 7950953981 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (7950953981) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28703667 + ... + 28703943.

Almost surely, 2^7950953985 is an apocalyptic number.

It is an amenable number.

7950953985 is a deficient number, since it is larger than the sum of its proper divisors (6086853951).

7950953985 is an equidigital number, since it uses as much as digits as its factorization.

7950953985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 15309000, while the sum is 60.

The square root of 7950953985 is about 89168.1220223909. The cubic root of 7950953985 is about 1995.9044510475.

The spelling of 7950953985 in words is "seven billion, nine hundred fifty million, nine hundred fifty-three thousand, nine hundred eighty-five".