20590681136 has 10 divisors (see below), whose sum is σ = 39894444732. Its totient is φ = 10295340560.

The previous prime is 20590681109. The next prime is 20590681141. The reversal of 20590681136 is 63118609502.

It is a super-2 number, since 2×20590681136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20590681093 and 20590681102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643458770 + ... + 643458801.

Almost surely, 2^20590681136 is an apocalyptic number.

It is an amenable number.

20590681136 is a deficient number, since it is larger than the sum of its proper divisors (19303763596).

20590681136 is a wasteful number, since it uses less digits than its factorization.

20590681136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286917579 (or 1286917573 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 20590681136 in words is "twenty billion, five hundred ninety million, six hundred eighty-one thousand, one hundred thirty-six".