19887213153 has 8 divisors (see below), whose sum is σ = 26601546816. Its totient is φ = 13215510800.

The previous prime is 19887213149. The next prime is 19887213167. The reversal of 19887213153 is 35131278891.

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

It is a cyclic number.

It is not a de Polignac number, because 19887213153 - 2² = 19887213149 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19887213193) 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, 10656738 + ... + 10658603.

It is an arithmetic number, because the mean of its divisors is an integer number (3325193352).

Almost surely, 2^19887213153 is an apocalyptic number.

It is an amenable number.

19887213153 is a deficient number, since it is larger than the sum of its proper divisors (6714333663).

19887213153 is a wasteful number, since it uses less digits than its factorization.

19887213153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21315655.

The product of its digits is 362880, while the sum is 48.

The spelling of 19887213153 in words is "nineteen billion, eight hundred eighty-seven million, two hundred thirteen thousand, one hundred fifty-three".