20356740500 has 48 divisors (see below), whose sum is σ = 45212731200. Its totient is φ = 8004672800.

The previous prime is 20356740497. The next prime is 20356740541. The reversal of 20356740500 is 504765302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315530 + ... + 374529.

It is an arithmetic number, because the mean of its divisors is an integer number (941931900).

Almost surely, 2^20356740500 is an apocalyptic number.

20356740500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20356740500 is an abundant number, since it is smaller than the sum of its proper divisors (24855990700).

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

20356740500 is a wasteful number, since it uses less digits than its factorization.

20356740500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690137 (or 690125 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 20356740500 in words is "twenty billion, three hundred fifty-six million, seven hundred forty thousand, five hundred".