111525615663 has 96 divisors (see below), whose sum is σ = 189373137408. Its totient is φ = 57141934080.

The previous prime is 111525615659. The next prime is 111525615671. The reversal of 111525615663 is 366516525111.

It is not a de Polignac number, because 111525615663 - 2² = 111525615659 is a prime.

It is a super-2 number, since 2×111525615663² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111525615613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66901156 + ... + 66902822.

It is an arithmetic number, because the mean of its divisors is an integer number (1972636848).

Almost surely, 2^111525615663 is an apocalyptic number.

111525615663 is a deficient number, since it is larger than the sum of its proper divisors (77847521745).

111525615663 is a wasteful number, since it uses less digits than its factorization.

111525615663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2034 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The spelling of 111525615663 in words is "one hundred eleven billion, five hundred twenty-five million, six hundred fifteen thousand, six hundred sixty-three".