19236421704 has 16 divisors (see below), whose sum is σ = 48091054320. Its totient is φ = 6412140560.

The previous prime is 19236421679. The next prime is 19236421727. The reversal of 19236421704 is 40712463291.

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, 400758762 + ... + 400758809.

It is an arithmetic number, because the mean of its divisors is an integer number (3005690895).

Almost surely, 2^19236421704 is an apocalyptic number.

It is an amenable number.

19236421704 is an abundant number, since it is smaller than the sum of its proper divisors (28854632616).

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

19236421704 is a wasteful number, since it uses less digits than its factorization.

19236421704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801517580 (or 801517576 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

Adding to 19236421704 its reverse (40712463291), we get a palindrome (59948884995).

The spelling of 19236421704 in words is "nineteen billion, two hundred thirty-six million, four hundred twenty-one thousand, seven hundred four".