19455429664 has 48 divisors (see below), whose sum is σ = 42674034816. Its totient is φ = 8655212800.

The previous prime is 19455429571. The next prime is 19455429709. The reversal of 19455429664 is 46692455491.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571447 + ... + 604534.

It is an arithmetic number, because the mean of its divisors is an integer number (889042392).

Almost surely, 2^19455429664 is an apocalyptic number.

It is an amenable number.

19455429664 is an abundant number, since it is smaller than the sum of its proper divisors (23218605152).

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

19455429664 is a wasteful number, since it uses less digits than its factorization.

19455429664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176049 (or 1176041 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 55.

The spelling of 19455429664 in words is "nineteen billion, four hundred fifty-five million, four hundred twenty-nine thousand, six hundred sixty-four".