20419020136 has 16 divisors (see below), whose sum is σ = 38287304100. Its totient is φ = 10209072384.

The previous prime is 20419020113. The next prime is 20419020157. The reversal of 20419020136 is 63102091402.

It can be written as a sum of positive squares in 2 ways, for example, as 20418695236 + 324900 = 142894^2 + 570^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231850 + ... + 307558.

Almost surely, 2^20419020136 is an apocalyptic number.

It is an amenable number.

20419020136 is a deficient number, since it is larger than the sum of its proper divisors (17868283964).

20419020136 is a wasteful number, since it uses less digits than its factorization.

20419020136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109428 (or 109424 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 20419020136 in words is "twenty billion, four hundred nineteen million, twenty thousand, one hundred thirty-six".