20408017612 has 12 divisors (see below), whose sum is σ = 35803096056. Its totient is φ = 10178561600.

The previous prime is 20408017603. The next prime is 20408017631. The reversal of 20408017612 is 21671080402.

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, 6359998 + ... + 6363205.

It is an arithmetic number, because the mean of its divisors is an integer number (2983591338).

Almost surely, 2^20408017612 is an apocalyptic number.

It is an amenable number.

20408017612 is a deficient number, since it is larger than the sum of its proper divisors (15395078444).

20408017612 is a wasteful number, since it uses less digits than its factorization.

20408017612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12723608 (or 12723606 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 20408017612 in words is "twenty billion, four hundred eight million, seventeen thousand, six hundred twelve".