21237336112858 has 8 divisors (see below), whose sum is σ = 31858100970228. Its totient is φ = 10617969122784.

The previous prime is 21237336112843. The next prime is 21237336112859. The reversal of 21237336112858 is 85821163373212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19534746954969 + 1702589157889 = 4419813^2 + 1304833^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21237336112859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349428841 + ... + 349489612.

Almost surely, 2^{21237336112858} is an apocalyptic number.

21237336112858 is a deficient number, since it is larger than the sum of its proper divisors (10620764857370).

21237336112858 is a wasteful number, since it uses less digits than its factorization.

21237336112858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698933648.

The product of its digits is 2903040, while the sum is 52.

The spelling of 21237336112858 in words is "twenty-one trillion, two hundred thirty-seven billion, three hundred thirty-six million, one hundred twelve thousand, eight hundred fifty-eight".