20531035452 has 24 divisors (see below), whose sum is σ = 48353469696. Its totient is φ = 6779718448.

The previous prime is 20531035397. The next prime is 20531035529. The reversal of 20531035452 is 25453013502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7993668 + ... + 7996235.

It is an arithmetic number, because the mean of its divisors is an integer number (2014727904).

Almost surely, 2^20531035452 is an apocalyptic number.

It is an amenable number.

20531035452 is an abundant number, since it is smaller than the sum of its proper divisors (27822434244).

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

20531035452 is a wasteful number, since it uses less digits than its factorization.

20531035452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15990017 (or 15990015 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 20531035452 its reverse (25453013502), we get a palindrome (45984048954).

The spelling of 20531035452 in words is "twenty billion, five hundred thirty-one million, thirty-five thousand, four hundred fifty-two".