20036545820 has 12 divisors (see below), whose sum is σ = 42076746264. Its totient is φ = 8014618320.

The previous prime is 20036545819. The next prime is 20036545849. The reversal of 20036545820 is 2854563002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500913626 + ... + 500913665.

It is an arithmetic number, because the mean of its divisors is an integer number (3506395522).

Almost surely, 2^20036545820 is an apocalyptic number.

20036545820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20036545820 is an abundant number, since it is smaller than the sum of its proper divisors (22040200444).

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

20036545820 is a wasteful number, since it uses less digits than its factorization.

20036545820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001827300 (or 1001827298 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 20036545820 in words is "twenty billion, thirty-six million, five hundred forty-five thousand, eight hundred twenty".