20357203100 has 36 divisors (see below), whose sum is σ = 47573220744. Its totient is φ = 7516505280.

The previous prime is 20357203073. The next prime is 20357203157. The reversal of 20357203100 is 130275302.

It is a super-2 number, since 2×20357203100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7828394 + ... + 7830993.

It is an arithmetic number, because the mean of its divisors is an integer number (1321478354).

Almost surely, 2^20357203100 is an apocalyptic number.

20357203100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20357203100 is an abundant number, since it is smaller than the sum of its proper divisors (27216017644).

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

20357203100 is a wasteful number, since it uses less digits than its factorization.

20357203100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15659414 (or 15659407 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

Adding to 20357203100 its reverse (130275302), we get a palindrome (20487478402).

The spelling of 20357203100 in words is "twenty billion, three hundred fifty-seven million, two hundred three thousand, one hundred".