19974819255 has 8 divisors (see below), whose sum is σ = 31959710832. Its totient is φ = 10653236928.

The previous prime is 19974819173. The next prime is 19974819287. The reversal of 19974819255 is 55291847991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19974819255 - 2⁷ = 19974819127 is a prime.

It is a congruent number.

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, 665827294 + ... + 665827323.

It is an arithmetic number, because the mean of its divisors is an integer number (3994963854).

Almost surely, 2^19974819255 is an apocalyptic number.

19974819255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19974819255 is a deficient number, since it is larger than the sum of its proper divisors (11984891577).

19974819255 is a wasteful number, since it uses less digits than its factorization.

19974819255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331654625.

The product of its digits is 8164800, while the sum is 60.

The spelling of 19974819255 in words is "nineteen billion, nine hundred seventy-four million, eight hundred nineteen thousand, two hundred fifty-five".