2090271010644 has 72 divisors (see below), whose sum is σ = 5289748824360. Its totient is φ = 695965132800.

The previous prime is 2090271010637. The next prime is 2090271010687. The reversal of 2090271010644 is 4460101720902.

It is a happy number.

2090271010644 is a `hidden beast` number, since 2 + 0 + 9 + 0 + 2 + 7 + 1 + 0 + 1 + 0 + 644 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 938379690000 + 1151891320644 = 968700^2 + 1073262^2 .

It is a super-2 number, since 2×2090271010644² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2090271010599 and 2090271010608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164310204 + ... + 164322924.

Almost surely, 2^{2090271010644} is an apocalyptic number.

It is an amenable number.

2090271010644 is an abundant number, since it is smaller than the sum of its proper divisors (3199477813716).

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

2090271010644 is a wasteful number, since it uses less digits than its factorization.

2090271010644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17561 (or 17556 counting only the distinct ones).

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

The spelling of 2090271010644 in words is "two trillion, ninety billion, two hundred seventy-one million, ten thousand, six hundred forty-four".