20015321352 has 64 divisors (see below), whose sum is σ = 54161110080. Its totient is φ = 6127279872.

The previous prime is 20015321323. The next prime is 20015321357. The reversal of 20015321352 is 25312351002.

It is a happy number.

It is a super-2 number, since 2×20015321352² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20015321357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101358 + ... + 224285.

It is an arithmetic number, because the mean of its divisors is an integer number (846267345).

Almost surely, 2^20015321352 is an apocalyptic number.

It is an amenable number.

20015321352 is an abundant number, since it is smaller than the sum of its proper divisors (34145788728).

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

20015321352 is a wasteful number, since it uses less digits than its factorization.

20015321352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325862 (or 325858 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20015321352 its reverse (25312351002), we get a palindrome (45327672354).

The spelling of 20015321352 in words is "twenty billion, fifteen million, three hundred twenty-one thousand, three hundred fifty-two".