20357906120 has 16 divisors (see below), whose sum is σ = 45805288860. Its totient is φ = 8143162432.

The previous prime is 20357906099. The next prime is 20357906131. The reversal of 20357906120 is 2160975302.

It can be written as a sum of positive squares in 2 ways, for example, as 20288583844 + 69322276 = 142438^2 + 8326^2 .

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, 254473787 + ... + 254473866.

Almost surely, 2^20357906120 is an apocalyptic number.

20357906120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20357906120 is an abundant number, since it is smaller than the sum of its proper divisors (25447382740).

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

20357906120 is a wasteful number, since it uses less digits than its factorization.

20357906120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508947664 (or 508947660 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 20357906120 in words is "twenty billion, three hundred fifty-seven million, nine hundred six thousand, one hundred twenty".