20320737152 has 32 divisors (see below), whose sum is σ = 40593119520. Its totient is φ = 10132660224.

The previous prime is 20320737149. The next prime is 20320737163. The reversal of 20320737152 is 25173702302.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×20320737152³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169313 + ... + 263264.

It is an arithmetic number, because the mean of its divisors is an integer number (1268534985).

Almost surely, 2^20320737152 is an apocalyptic number.

It is an amenable number.

20320737152 is a deficient number, since it is larger than the sum of its proper divisors (20272382368).

20320737152 is an equidigital number, since it uses as much as digits as its factorization.

20320737152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432958 (or 432946 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 20320737152 in words is "twenty billion, three hundred twenty million, seven hundred thirty-seven thousand, one hundred fifty-two".