8956719978 has 16 divisors (see below), whose sum is σ = 17933783616. Its totient is φ = 2982182720.

The previous prime is 8956719973. The next prime is 8956719979. The reversal of 8956719978 is 8799176598.

It is not an unprimeable number, because it can be changed into a prime (8956719971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841926 + ... + 852497.

It is an arithmetic number, because the mean of its divisors is an integer number (1120861476).

Almost surely, 2^8956719978 is an apocalyptic number.

8956719978 is an abundant number, since it is smaller than the sum of its proper divisors (8977063638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8956719978 is a wasteful number, since it uses less digits than its factorization.

8956719978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695309.

The product of its digits is 68584320, while the sum is 69.

The square root of 8956719978 is about 94639.9491652442. The cubic root of 8956719978 is about 2076.7441649432.

The spelling of 8956719978 in words is "eight billion, nine hundred fifty-six million, seven hundred nineteen thousand, nine hundred seventy-eight".