21652405010431 has 8 divisors (see below), whose sum is σ = 24331799610720. Its totient is φ = 19117842550752.

The previous prime is 21652405010413. The next prime is 21652405010447. The reversal of 21652405010431 is 13401050425612.

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 21652405010431 - 2¹¹ = 21652405008383 is a prime.

It is a super-2 number, since 2×21652405010431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21652405010491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36208034836 + ... + 36208035433.

It is an arithmetic number, because the mean of its divisors is an integer number (3041474951340).

Almost surely, 2^{21652405010431} is an apocalyptic number.

21652405010431 is a deficient number, since it is larger than the sum of its proper divisors (2679394600289).

21652405010431 is a wasteful number, since it uses less digits than its factorization.

21652405010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72416070305.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 21652405010431 in words is "twenty-one trillion, six hundred fifty-two billion, four hundred five million, ten thousand, four hundred thirty-one".