20052151504 has 80 divisors (see below), whose sum is σ = 48526286976. Its totient is φ = 7798233600.

The previous prime is 20052151501. The next prime is 20052151513. The reversal of 20052151504 is 40515125002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052151501) 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, 671614 + ... + 700834.

Almost surely, 2^20052151504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20052151504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24263143488).

20052151504 is an abundant number, since it is smaller than the sum of its proper divisors (28474135472).

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

20052151504 is a wasteful number, since it uses less digits than its factorization.

20052151504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29804 (or 29798 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 20052151504 its reverse (40515125002), we get a palindrome (60567276506).

The spelling of 20052151504 in words is "twenty billion, fifty-two million, one hundred fifty-one thousand, five hundred four".