21112155495 has 20 divisors (see below), whose sum is σ = 37845494280. Its totient is φ = 11259816048.

The previous prime is 21112155479. The next prime is 21112155509. The reversal of 21112155495 is 59455121112.

21112155495 is a `hidden beast` number, since 2 + 1 + 1 + 12 + 1 + 554 + 95 = 666.

It is not a de Polignac number, because 21112155495 - 2⁴ = 21112155479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26063985 + ... + 26064794.

It is an arithmetic number, because the mean of its divisors is an integer number (1892274714).

Almost surely, 2^21112155495 is an apocalyptic number.

21112155495 is a deficient number, since it is larger than the sum of its proper divisors (16733338785).

21112155495 is an equidigital number, since it uses as much as digits as its factorization.

21112155495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52128796 (or 52128787 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The spelling of 21112155495 in words is "twenty-one billion, one hundred twelve million, one hundred fifty-five thousand, four hundred ninety-five".