21929302045731 has 8 divisors (see below), whose sum is σ = 29240366174800. Its totient is φ = 14618886306912.

The previous prime is 21929302045699. The next prime is 21929302045769. The reversal of 21929302045731 is 13754020392912.

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

It is not a de Polignac number, because 21929302045731 - 2⁵ = 21929302045699 is a prime.

It is a super-2 number, since 2×21929302045731² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21929302005731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162018640 + ... + 162153933.

It is an arithmetic number, because the mean of its divisors is an integer number (3655045771850).

Almost surely, 2^{21929302045731} is an apocalyptic number.

21929302045731 is a deficient number, since it is larger than the sum of its proper divisors (7311064129069).

21929302045731 is a wasteful number, since it uses less digits than its factorization.

21929302045731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324195125.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 21929302045731 in words is "twenty-one trillion, nine hundred twenty-nine billion, three hundred two million, forty-five thousand, seven hundred thirty-one".