9156977786879 has 8 divisors (see below), whose sum is σ = 9865014440400. Its totient is φ = 8449463097216.

The previous prime is 9156977786867. The next prime is 9156977786897. The reversal of 9156977786879 is 9786877796519.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9156977786879 - 2¹² = 9156977782783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9156977786794 and 9156977786803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9156977786819) 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, 130454522 + ... + 130524695.

It is an arithmetic number, because the mean of its divisors is an integer number (1233126805050).

Almost surely, 2^{9156977786879} is an apocalyptic number.

9156977786879 is a deficient number, since it is larger than the sum of its proper divisors (708036653521).

9156977786879 is a wasteful number, since it uses less digits than its factorization.

9156977786879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260981929.

The product of its digits is 20163790080, while the sum is 89.

The spelling of 9156977786879 in words is "nine trillion, one hundred fifty-six billion, nine hundred seventy-seven million, seven hundred eighty-six thousand, eight hundred seventy-nine".