19241081664 has 224 divisors, whose sum is σ = 61954867200. Its totient is φ = 5258018304.

The previous prime is 19241081647. The next prime is 19241081701. The reversal of 19241081664 is 46618014291.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1508337 + ... + 1521039.

Almost surely, 2^19241081664 is an apocalyptic number.

19241081664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19241081664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30977433600).

19241081664 is an abundant number, since it is smaller than the sum of its proper divisors (42713785536).

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

19241081664 is a wasteful number, since it uses less digits than its factorization.

19241081664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762 (or 12738 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 19241081664 in words is "nineteen billion, two hundred forty-one million, eighty-one thousand, six hundred sixty-four".