11451511640503 has 16 divisors (see below), whose sum is σ = 12527818041600. Its totient is φ = 10381101065280.

The previous prime is 11451511640467. The next prime is 11451511640507. The reversal of 11451511640503 is 30504611515411.

It is a de Polignac number, because none of the positive numbers 2^k-11451511640503 is a prime.

It is a super-2 number, since 2×11451511640503² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451511640507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11502928 + ... + 12458746.

It is an arithmetic number, because the mean of its divisors is an integer number (782988627600).

Almost surely, 2^{11451511640503} is an apocalyptic number.

11451511640503 is a deficient number, since it is larger than the sum of its proper divisors (1076306401097).

11451511640503 is a wasteful number, since it uses less digits than its factorization.

11451511640503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958902.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 11451511640503 in words is "eleven trillion, four hundred fifty-one billion, five hundred eleven million, six hundred forty thousand, five hundred three".