20419385640912 has 120 divisors (see below), whose sum is σ = 59493031118976. Its totient is φ = 6779977261056.

The previous prime is 20419385640859. The next prime is 20419385640949. The reversal of 20419385640912 is 21904658391402.

It is a happy number.

20419385640912 is a `hidden beast` number, since 2 + 0 + 41 + 9 + 38 + 564 + 0 + 9 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 9218488 + ... + 11216919.

Almost surely, 2^{20419385640912} is an apocalyptic number.

It is an amenable number.

20419385640912 is an abundant number, since it is smaller than the sum of its proper divisors (39073645478064).

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

20419385640912 is a wasteful number, since it uses less digits than its factorization.

20419385640912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20435687 (or 20435669 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 20419385640912 in words is "twenty trillion, four hundred nineteen billion, three hundred eighty-five million, six hundred forty thousand, nine hundred twelve".