21337419355 has 32 divisors (see below), whose sum is σ = 32331239424. Its totient is φ = 13171969536.

The previous prime is 21337419347. The next prime is 21337419359. The reversal of 21337419355 is 55391473312.

It is a cyclic number.

It is not a de Polignac number, because 21337419355 - 2³ = 21337419347 is a prime.

It is a super-2 number, since 2×21337419355² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21337419359) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 765907 + ... + 793276.

It is an arithmetic number, because the mean of its divisors is an integer number (1010351232).

Almost surely, 2^21337419355 is an apocalyptic number.

21337419355 is a deficient number, since it is larger than the sum of its proper divisors (10993820069).

21337419355 is a wasteful number, since it uses less digits than its factorization.

21337419355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559235.

The product of its digits is 340200, while the sum is 43.

The spelling of 21337419355 in words is "twenty-one billion, three hundred thirty-seven million, four hundred nineteen thousand, three hundred fifty-five".