1117215778473 has 12 divisors (see below), whose sum is σ = 1614251639988. Its totient is φ = 744581819520.

The previous prime is 1117215778387. The next prime is 1117215778501. The reversal of 1117215778473 is 3748775127111.

1117215778473 is a `hidden beast` number, since 1 + 1 + 1 + 7 + 21 + 577 + 8 + 47 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 901202766489 + 216013011984 = 949317^2 + 464772^2 .

It is not a de Polignac number, because 1117215778473 - 2¹⁶ = 1117215712937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1117215778373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19027348 + ... + 19085973.

It is an arithmetic number, because the mean of its divisors is an integer number (134520969999).

Almost surely, 2^{1117215778473} is an apocalyptic number.

It is an amenable number.

1117215778473 is a deficient number, since it is larger than the sum of its proper divisors (497035861515).

1117215778473 is a wasteful number, since it uses less digits than its factorization.

1117215778473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38116584 (or 38116581 counting only the distinct ones).

The product of its digits is 2304960, while the sum is 54.

The spelling of 1117215778473 in words is "one trillion, one hundred seventeen billion, two hundred fifteen million, seven hundred seventy-eight thousand, four hundred seventy-three".