20206382520 has 32 divisors (see below), whose sum is σ = 60619147920. Its totient is φ = 5388368640.

The previous prime is 20206382507. The next prime is 20206382543. The reversal of 20206382520 is 2528360202.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 84193141 + ... + 84193380.

Almost surely, 2^20206382520 is an apocalyptic number.

20206382520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20206382520 is an abundant number, since it is smaller than the sum of its proper divisors (40412765400).

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

20206382520 is a wasteful number, since it uses less digits than its factorization.

20206382520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168386535 (or 168386531 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 20206382520 in words is "twenty billion, two hundred six million, three hundred eighty-two thousand, five hundred twenty".