19870996623 has 8 divisors (see below), whose sum is σ = 26929001136. Its totient is φ = 13030161600.

The previous prime is 19870996577. The next prime is 19870996667. The reversal of 19870996623 is 32669907891.

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

It is not a de Polignac number, because 19870996623 - 2²⁹ = 19334125711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19870997623) 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, 54292158 + ... + 54292523.

It is an arithmetic number, because the mean of its divisors is an integer number (3366125142).

Almost surely, 2^19870996623 is an apocalyptic number.

19870996623 is a deficient number, since it is larger than the sum of its proper divisors (7058004513).

19870996623 is a wasteful number, since it uses less digits than its factorization.

19870996623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108584745.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 19870996623 in words is "nineteen billion, eight hundred seventy million, nine hundred ninety-six thousand, six hundred twenty-three".