19765993379 has 16 divisors (see below), whose sum is σ = 22842401280. Its totient is φ = 16914886560.

The previous prime is 19765993343. The next prime is 19765993411. The reversal of 19765993379 is 97339956791.

It is not a de Polignac number, because 19765993379 - 2¹² = 19765989283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19765993579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268379 + ... + 334004.

It is an arithmetic number, because the mean of its divisors is an integer number (1427650080).

Almost surely, 2^19765993379 is an apocalyptic number.

19765993379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19765993379 is a deficient number, since it is larger than the sum of its proper divisors (3076407901).

19765993379 is a wasteful number, since it uses less digits than its factorization.

19765993379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602570.

The product of its digits is 86802030, while the sum is 68.

The spelling of 19765993379 in words is "nineteen billion, seven hundred sixty-five million, nine hundred ninety-three thousand, three hundred seventy-nine".