19820127975 has 24 divisors (see below), whose sum is σ = 32775997440. Its totient is φ = 10568567520.

The previous prime is 19820127961. The next prime is 19820128001. The reversal of 19820127975 is 57972102891.

It is not a de Polignac number, because 19820127975 - 2¹² = 19820123879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382042 + ... + 430808.

It is an arithmetic number, because the mean of its divisors is an integer number (1365666560).

Almost surely, 2^19820127975 is an apocalyptic number.

19820127975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19820127975 is a deficient number, since it is larger than the sum of its proper divisors (12955869465).

19820127975 is a wasteful number, since it uses less digits than its factorization.

19820127975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54199 (or 54194 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 19820127975 in words is "nineteen billion, eight hundred twenty million, one hundred twenty-seven thousand, nine hundred seventy-five".