111720754457 has 24 divisors (see below), whose sum is σ = 122342111424. Its totient is φ = 101965241664.

The previous prime is 111720754399. The next prime is 111720754501. The reversal of 111720754457 is 754457027111.

It is a happy number.

It is not a de Polignac number, because 111720754457 - 2¹⁰ = 111720753433 is a prime.

It is a super-3 number, since 3×111720754457³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111720750457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11884283 + ... + 11893679.

It is an arithmetic number, because the mean of its divisors is an integer number (5097587976).

Almost surely, 2^111720754457 is an apocalyptic number.

It is an amenable number.

111720754457 is a deficient number, since it is larger than the sum of its proper divisors (10621356967).

111720754457 is a wasteful number, since it uses less digits than its factorization.

111720754457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10209 (or 10196 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 44.

The spelling of 111720754457 in words is "one hundred eleven billion, seven hundred twenty million, seven hundred fifty-four thousand, four hundred fifty-seven".