20274558020 has 36 divisors (see below), whose sum is σ = 45228412740. Its totient is φ = 7632772608.

The previous prime is 20274558001. The next prime is 20274558023. The reversal of 20274558020 is 2085547202.

It can be written as a sum of positive squares in 6 ways, for example, as 3747398656 + 16527159364 = 61216^2 + 128558^2 .

It is a super-2 number, since 2×20274558020² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20274558023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1748075 + ... + 1759634.

Almost surely, 2^20274558020 is an apocalyptic number.

20274558020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20274558020 is an abundant number, since it is smaller than the sum of its proper divisors (24953854720).

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

20274558020 is a wasteful number, since it uses less digits than its factorization.

20274558020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507752 (or 3507733 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 20274558020 in words is "twenty billion, two hundred seventy-four million, five hundred fifty-eight thousand, twenty".