111985970457 has 8 divisors (see below), whose sum is σ = 149389554784. Its totient is φ = 74619849888.

The previous prime is 111985970377. The next prime is 111985970461. The reversal of 111985970457 is 754079589111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111985970457 - 2²⁴ = 111969193241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111985970397 and 111985970406.

It is not an unprimeable number, because it can be changed into a prime (111985978457) 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, 9358963 + ... + 9370920.

It is an arithmetic number, because the mean of its divisors is an integer number (18673694348).

Almost surely, 2^111985970457 is an apocalyptic number.

It is an amenable number.

111985970457 is a deficient number, since it is larger than the sum of its proper divisors (37403584327).

111985970457 is a wasteful number, since it uses less digits than its factorization.

111985970457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18731879.

The product of its (nonzero) digits is 3175200, while the sum is 57.

The spelling of 111985970457 in words is "one hundred eleven billion, nine hundred eighty-five million, nine hundred seventy thousand, four hundred fifty-seven".