66110157525503 has 32 divisors (see below), whose sum is σ = 81597466782720. Its totient is φ = 52158377306880.

The previous prime is 66110157525497. The next prime is 66110157525521. The reversal of 66110157525503 is 30552575101166.

It is not a de Polignac number, because 66110157525503 - 2³⁰ = 66109083783679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66110157525553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752225123 + ... + 752313003.

It is an arithmetic number, because the mean of its divisors is an integer number (2549920836960).

Almost surely, 2^{66110157525503} is an apocalyptic number.

66110157525503 is a deficient number, since it is larger than the sum of its proper divisors (15487309257217).

66110157525503 is a wasteful number, since it uses less digits than its factorization.

66110157525503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111287.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 66110157525503 in words is "sixty-six trillion, one hundred ten billion, one hundred fifty-seven million, five hundred twenty-five thousand, five hundred three".