19854550412 has 6 divisors (see below), whose sum is σ = 34745463228. Its totient is φ = 9927275204.

The previous prime is 19854550411. The next prime is 19854550423. The reversal of 19854550412 is 21405545891.

It is not an unprimeable number, because it can be changed into a prime (19854550411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2481818798 + ... + 2481818805.

It is an arithmetic number, because the mean of its divisors is an integer number (5790910538).

Almost surely, 2^19854550412 is an apocalyptic number.

It is an amenable number.

19854550412 is a deficient number, since it is larger than the sum of its proper divisors (14890912816).

19854550412 is a wasteful number, since it uses less digits than its factorization.

19854550412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963637607 (or 4963637605 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 19854550412 in words is "nineteen billion, eight hundred fifty-four million, five hundred fifty thousand, four hundred twelve".