19621051304 has 32 divisors (see below), whose sum is σ = 38626135200. Its totient is φ = 9330847680.

The previous prime is 19621051283. The next prime is 19621051321. The reversal of 19621051304 is 40315012691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615602 + ... + 646689.

It is an arithmetic number, because the mean of its divisors is an integer number (1207066725).

Almost surely, 2^19621051304 is an apocalyptic number.

It is an amenable number.

19621051304 is a deficient number, since it is larger than the sum of its proper divisors (19005083896).

19621051304 is a wasteful number, since it uses less digits than its factorization.

19621051304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262393 (or 1262389 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 19621051304 its reverse (40315012691), we get a palindrome (59936063995).

The spelling of 19621051304 in words is "nineteen billion, six hundred twenty-one million, fifty-one thousand, three hundred four".