21952537451135 has 16 divisors (see below), whose sum is σ = 26618430924000. Its totient is φ = 17379315636096.

The previous prime is 21952537451087. The next prime is 21952537451171. The reversal of 21952537451135 is 53115473525912.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21952537451135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54570029 + ... + 54970838.

It is an arithmetic number, because the mean of its divisors is an integer number (1663651932750).

Almost surely, 2^{21952537451135} is an apocalyptic number.

21952537451135 is a deficient number, since it is larger than the sum of its proper divisors (4665893472865).

21952537451135 is a wasteful number, since it uses less digits than its factorization.

21952537451135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109541290.

The product of its digits is 5670000, while the sum is 53.

The spelling of 21952537451135 in words is "twenty-one trillion, nine hundred fifty-two billion, five hundred thirty-seven million, four hundred fifty-one thousand, one hundred thirty-five".