20540364252636 has 36 divisors (see below), whose sum is σ = 50101921894472. Its totient is φ = 6549101643744.

The previous prime is 20540364252599. The next prime is 20540364252673. The reversal of 20540364252636 is 63625246304502.

It is an interprime number because it is at equal distance from previous prime (20540364252599) and next prime (20540364252673).

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, 1617854731 + ... + 1617867426.

Almost surely, 2^{20540364252636} is an apocalyptic number.

It is an amenable number.

20540364252636 is an abundant number, since it is smaller than the sum of its proper divisors (29561557641836).

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

20540364252636 is a wasteful number, since it uses less digits than its factorization.

20540364252636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235722210 (or 3235722185 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 48.

The spelling of 20540364252636 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred fifty-two thousand, six hundred thirty-six".