111215642355 has 16 divisors (see below), whose sum is σ = 197716697760. Its totient is φ = 59315009184.

The previous prime is 111215642347. The next prime is 111215642407. The reversal of 111215642355 is 553246512111.

111215642355 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 1 + 5 + 642 + 3 + 5 + 5 = 666.

It is not a de Polignac number, because 111215642355 - 2³ = 111215642347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411909652 + ... + 411909921.

It is an arithmetic number, because the mean of its divisors is an integer number (12357293610).

Almost surely, 2^111215642355 is an apocalyptic number.

111215642355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111215642355 is a deficient number, since it is larger than the sum of its proper divisors (86501055405).

111215642355 is an equidigital number, since it uses as much as digits as its factorization.

111215642355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823819587 (or 823819581 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

It can be divided in two parts, 1112156 and 42355, that added together give a palindrome (1154511).

The spelling of 111215642355 in words is "one hundred eleven billion, two hundred fifteen million, six hundred forty-two thousand, three hundred fifty-five".