1117597868978 has 16 divisors (see below), whose sum is σ = 1696637680416. Its totient is φ = 552052319520.

The previous prime is 1117597868971. The next prime is 1117597868983. The reversal of 1117597868978 is 8798687957111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1117597868899 and 1117597868908.

It is not an unprimeable number, because it can be changed into a prime (1117597868971) 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, 9959150 + ... + 10070742.

It is an arithmetic number, because the mean of its divisors is an integer number (106039855026).

Almost surely, 2^{1117597868978} is an apocalyptic number.

1117597868978 is a deficient number, since it is larger than the sum of its proper divisors (579039811438).

1117597868978 is a wasteful number, since it uses less digits than its factorization.

1117597868978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172009.

The product of its digits is 426746880, while the sum is 77.

The spelling of 1117597868978 in words is "one trillion, one hundred seventeen billion, five hundred ninety-seven million, eight hundred sixty-eight thousand, nine hundred seventy-eight".