111486791645 has 6 divisors (see below), whose sum is σ = 133785045918. Its totient is φ = 89188836024.

The previous prime is 111486791629. The next prime is 111486791657. The reversal of 111486791645 is 546197684111.

It can be written as a sum of positive squares in only one way, i.e., 89189433316 + 22297358329 = 298646^2 + 149323^2 .

It is not a de Polignac number, because 111486791645 - 2⁴ = 111486791629 is a prime.

It is a super-2 number, since 2×111486791645² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 671954 + ... + 821276.

It is an arithmetic number, because the mean of its divisors is an integer number (22297507653).

Almost surely, 2^111486791645 is an apocalyptic number.

It is an amenable number.

111486791645 is a deficient number, since it is larger than the sum of its proper divisors (22298254273).

111486791645 is an frugal number, since it uses more digits than its factorization.

111486791645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298651 (or 149328 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The spelling of 111486791645 in words is "one hundred eleven billion, four hundred eighty-six million, seven hundred ninety-one thousand, six hundred forty-five".