21934826545 has 8 divisors (see below), whose sum is σ = 27707149440. Its totient is φ = 16624289520.

The previous prime is 21934826533. The next prime is 21934826603. The reversal of 21934826545 is 54562843912.

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

It is not a de Polignac number, because 21934826545 - 2⁹ = 21934826033 is a prime.

It is a super-2 number, since 2×21934826545² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115446361 + ... + 115446550.

It is an arithmetic number, because the mean of its divisors is an integer number (3463393680).

Almost surely, 2^21934826545 is an apocalyptic number.

It is an amenable number.

21934826545 is a deficient number, since it is larger than the sum of its proper divisors (5772322895).

21934826545 is a wasteful number, since it uses less digits than its factorization.

21934826545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230892935.

The product of its digits is 2073600, while the sum is 49.

The spelling of 21934826545 in words is "twenty-one billion, nine hundred thirty-four million, eight hundred twenty-six thousand, five hundred forty-five".