7985206135977 has 16 divisors (see below), whose sum is σ = 12168648078720. Its totient is φ = 4562706840192.

The previous prime is 7985206135931. The next prime is 7985206135981. The reversal of 7985206135977 is 7795316025897.

It is not a de Polignac number, because 7985206135977 - 2⁷ = 7985206135849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7985206135927) 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, 10804402 + ... + 11519787.

It is an arithmetic number, because the mean of its divisors is an integer number (760540504920).

Almost surely, 2^{7985206135977} is an apocalyptic number.

It is an amenable number.

7985206135977 is a deficient number, since it is larger than the sum of its proper divisors (4183441942743).

7985206135977 is a wasteful number, since it uses less digits than its factorization.

7985206135977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22341232.

The product of its (nonzero) digits is 200037600, while the sum is 69.

The spelling of 7985206135977 in words is "seven trillion, nine hundred eighty-five billion, two hundred six million, one hundred thirty-five thousand, nine hundred seventy-seven".