21735455411361 has 32 divisors (see below), whose sum is σ = 29261487144960. Its totient is φ = 14350636555200.

The previous prime is 21735455411291. The next prime is 21735455411381. The reversal of 21735455411361 is 16311455453712.

It is not a de Polignac number, because 21735455411361 - 2¹³ = 21735455403169 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21735455411361.

It is not an unprimeable number, because it can be changed into a prime (21735455411381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166312680 + ... + 166443318.

It is an arithmetic number, because the mean of its divisors is an integer number (914421473280).

Almost surely, 2^{21735455411361} is an apocalyptic number.

It is an amenable number.

21735455411361 is a deficient number, since it is larger than the sum of its proper divisors (7526031733599).

21735455411361 is a wasteful number, since it uses less digits than its factorization.

21735455411361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132117.

The product of its digits is 1512000, while the sum is 48.

The spelling of 21735455411361 in words is "twenty-one trillion, seven hundred thirty-five billion, four hundred fifty-five million, four hundred eleven thousand, three hundred sixty-one".