20253040032 has 96 divisors (see below), whose sum is σ = 58107538944. Its totient is φ = 6148915200.

The previous prime is 20253039973. The next prime is 20253040037. The reversal of 20253040032 is 23004035202.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20253040032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20253039990 and 20253040008.

It is not an unprimeable number, because it can be changed into a prime (20253040037) 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, 149569 + ... + 250752.

It is an arithmetic number, because the mean of its divisors is an integer number (605286864).

Almost surely, 2^20253040032 is an apocalyptic number.

It is an amenable number.

20253040032 is an abundant number, since it is smaller than the sum of its proper divisors (37854498912).

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

20253040032 is a wasteful number, since it uses less digits than its factorization.

20253040032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400382 (or 400374 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

Adding to 20253040032 its reverse (23004035202), we get a palindrome (43257075234).

The spelling of 20253040032 in words is "twenty billion, two hundred fifty-three million, forty thousand, thirty-two".