20729312324 has 12 divisors (see below), whose sum is σ = 41458624704. Its totient is φ = 8883990984.

The previous prime is 20729312309. The next prime is 20729312381. The reversal of 20729312324 is 42321392702.

20729312324 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370166264 + ... + 370166319.

It is an arithmetic number, because the mean of its divisors is an integer number (3454885392).

Almost surely, 2^20729312324 is an apocalyptic number.

It is an amenable number.

20729312324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20729312324 is a wasteful number, since it uses less digits than its factorization.

20729312324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740332594 (or 740332592 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 20729312324 in words is "twenty billion, seven hundred twenty-nine million, three hundred twelve thousand, three hundred twenty-four".