19928215023 has 8 divisors (see below), whose sum is σ = 27188882688. Its totient is φ = 12976512024.

The previous prime is 19928215001. The next prime is 19928215123. The reversal of 19928215023 is 32051282991.

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

It is not a de Polignac number, because 19928215023 - 2¹⁰ = 19928213999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19928215123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77241015 + ... + 77241272.

It is an arithmetic number, because the mean of its divisors is an integer number (3398610336).

Almost surely, 2^19928215023 is an apocalyptic number.

19928215023 is a deficient number, since it is larger than the sum of its proper divisors (7260667665).

19928215023 is a wasteful number, since it uses less digits than its factorization.

19928215023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154482333.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 19928215023 in words is "nineteen billion, nine hundred twenty-eight million, two hundred fifteen thousand, twenty-three".