20271400610490 has 48 divisors (see below), whose sum is σ = 52820971325928. Its totient is φ = 5393878138368.

The previous prime is 20271400610477. The next prime is 20271400610491. The reversal of 20271400610490 is 9401600417202.

It is a happy number.

20271400610490 is a `hidden beast` number, since 2 + 0 + 2 + 71 + 40 + 0 + 61 + 0 + 490 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20228216861241 + 43183749249 = 4497579^2 + 207807^2 .

It is a super-3 number, since 3×20271400610490³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20271400610491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246389707 + ... + 246471966.

Almost surely, 2^{20271400610490} is an apocalyptic number.

20271400610490 is an abundant number, since it is smaller than the sum of its proper divisors (32549570715438).

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

20271400610490 is a wasteful number, since it uses less digits than its factorization.

20271400610490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492862143 (or 492862140 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 20271400610490 in words is "twenty trillion, two hundred seventy-one billion, four hundred million, six hundred ten thousand, four hundred ninety".