1111923497917 has 4 divisors (see below), whose sum is σ = 1113012552316. Its totient is φ = 1110834443520.

The previous prime is 1111923497863. The next prime is 1111923497933. The reversal of 1111923497917 is 7197943291111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259540321401 + 852383176516 = 509451^2 + 923246^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111923497917 - 2¹¹ = 1111923495869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111923497717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544525668 + ... + 544527709.

It is an arithmetic number, because the mean of its divisors is an integer number (278253138079).

Almost surely, 2^{1111923497917} is an apocalyptic number.

It is an amenable number.

1111923497917 is a deficient number, since it is larger than the sum of its proper divisors (1089054399).

1111923497917 is a wasteful number, since it uses less digits than its factorization.

1111923497917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089054398.

The product of its digits is 857304, while the sum is 55.

The spelling of 1111923497917 in words is "one trillion, one hundred eleven billion, nine hundred twenty-three million, four hundred ninety-seven thousand, nine hundred seventeen".