20836131604 has 24 divisors (see below), whose sum is σ = 37499594720. Its totient is φ = 10122726816.

The previous prime is 20836131593. The next prime is 20836131637. The reversal of 20836131604 is 40613163802.

It is a happy number.

It is a super-2 number, since 2×20836131604² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20836131604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14119 + ... + 204625.

Almost surely, 2^20836131604 is an apocalyptic number.

It is an amenable number.

20836131604 is a deficient number, since it is larger than the sum of its proper divisors (16663463116).

20836131604 is a wasteful number, since it uses less digits than its factorization.

20836131604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191287 (or 191285 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20836131604 in words is "twenty billion, eight hundred thirty-six million, one hundred thirty-one thousand, six hundred four".