11172991503 has 8 divisors (see below), whose sum is σ = 15029157168. Its totient is φ = 7382743424.

The previous prime is 11172991493. The next prime is 11172991519. The reversal of 11172991503 is 30519927111.

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 11172991503 - 2¹² = 11172987407 is a prime.

It is a super-2 number, since 2×11172991503² (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 (11172991603) 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, 16479000 + ... + 16479677.

It is an arithmetic number, because the mean of its divisors is an integer number (1878644646).

Almost surely, 2^11172991503 is an apocalyptic number.

11172991503 is a deficient number, since it is larger than the sum of its proper divisors (3856165665).

11172991503 is a wasteful number, since it uses less digits than its factorization.

11172991503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32958793.

The product of its (nonzero) digits is 17010, while the sum is 39.

The spelling of 11172991503 in words is "eleven billion, one hundred seventy-two million, nine hundred ninety-one thousand, five hundred three".