21137362255 has 8 divisors (see below), whose sum is σ = 25366215600. Its totient is φ = 16908969216.

The previous prime is 21137362201. The next prime is 21137362283. The reversal of 21137362255 is 55226373112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21137362255 - 2²¹ = 21135265103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4365 + ... + 205654.

It is an arithmetic number, because the mean of its divisors is an integer number (3170776950).

Almost surely, 2^21137362255 is an apocalyptic number.

21137362255 is a deficient number, since it is larger than the sum of its proper divisors (4228853345).

21137362255 is a wasteful number, since it uses less digits than its factorization.

21137362255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230153.

The product of its digits is 75600, while the sum is 37.

The spelling of 21137362255 in words is "twenty-one billion, one hundred thirty-seven million, three hundred sixty-two thousand, two hundred fifty-five".