20153213252 has 24 divisors (see below), whose sum is σ = 36636969600. Its totient is φ = 9688416416.

The previous prime is 20153213251. The next prime is 20153213273. The reversal of 20153213252 is 25231235102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20153213251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335738 + ... + 391185.

It is an arithmetic number, because the mean of its divisors is an integer number (1526540400).

Almost surely, 2^20153213252 is an apocalyptic number.

It is an amenable number.

20153213252 is a deficient number, since it is larger than the sum of its proper divisors (16483756348).

20153213252 is a wasteful number, since it uses less digits than its factorization.

20153213252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727195 (or 727193 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20153213252 its reverse (25231235102), we get a palindrome (45384448354).

The spelling of 20153213252 in words is "twenty billion, one hundred fifty-three million, two hundred thirteen thousand, two hundred fifty-two".