19068571640 has 16 divisors (see below), whose sum is σ = 42904286280. Its totient is φ = 7627428640.

The previous prime is 19068571631. The next prime is 19068571651. The reversal of 19068571640 is 4617586091.

It is a super-2 number, since 2×19068571640² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238357106 + ... + 238357185.

Almost surely, 2^19068571640 is an apocalyptic number.

19068571640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19068571640 is an abundant number, since it is smaller than the sum of its proper divisors (23835714640).

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

19068571640 is a wasteful number, since it uses less digits than its factorization.

19068571640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476714302 (or 476714298 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 19068571640 in words is "nineteen billion, sixty-eight million, five hundred seventy-one thousand, six hundred forty".