19416599664 has 120 divisors (see below), whose sum is σ = 63653390208. Its totient is φ = 5043265920.

The previous prime is 19416599659. The next prime is 19416599677. The reversal of 19416599664 is 46699561491.

It is a junction number, because it is equal to n+sod(n) for n = 19416599598 and 19416599607.

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, 349372 + ... + 401115.

Almost surely, 2^19416599664 is an apocalyptic number.

19416599664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19416599664 is an abundant number, since it is smaller than the sum of its proper divisors (44236790544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19416599664 is a wasteful number, since it uses less digits than its factorization.

19416599664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750523 (or 750510 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 60.

The spelling of 19416599664 in words is "nineteen billion, four hundred sixteen million, five hundred ninety-nine thousand, six hundred sixty-four".