11173076991 has 12 divisors (see below), whose sum is σ = 17088235632. Its totient is φ = 7010558016.

The previous prime is 11173076989. The next prime is 11173077029. The reversal of 11173076991 is 19967037111.

It is not a de Polignac number, because 11173076991 - 2¹ = 11173076989 is a prime.

It is a super-2 number, since 2×11173076991² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11173076921) 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, 36513171 + ... + 36513476.

It is an arithmetic number, because the mean of its divisors is an integer number (1424019636).

Almost surely, 2^11173076991 is an apocalyptic number.

11173076991 is a deficient number, since it is larger than the sum of its proper divisors (5915158641).

11173076991 is a wasteful number, since it uses less digits than its factorization.

11173076991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73026670 (or 73026667 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 45.

The spelling of 11173076991 in words is "eleven billion, one hundred seventy-three million, seventy-six thousand, nine hundred ninety-one".