20502403532 has 24 divisors (see below), whose sum is σ = 38643360000. Its totient is φ = 9461615616.

The previous prime is 20502403531. The next prime is 20502403547. The reversal of 20502403532 is 23530420502.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20502403531) 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, 674069 + ... + 703827.

It is an arithmetic number, because the mean of its divisors is an integer number (1610140000).

Almost surely, 2^20502403532 is an apocalyptic number.

It is an amenable number.

20502403532 is a deficient number, since it is larger than the sum of its proper divisors (18140956468).

20502403532 is a wasteful number, since it uses less digits than its factorization.

20502403532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43025 (or 43023 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The spelling of 20502403532 in words is "twenty billion, five hundred two million, four hundred three thousand, five hundred thirty-two".