19942532271 has 6 divisors (see below), whose sum is σ = 28805879960. Its totient is φ = 13295021508.

The previous prime is 19942532249. The next prime is 19942532317. The reversal of 19942532271 is 17223524991.

19942532271 is a `hidden beast` number, since 1 + 9 + 9 + 42 + 532 + 2 + 71 = 666.

It is not a de Polignac number, because 19942532271 - 2¹³ = 19942524079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19942532201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1107918451 + ... + 1107918468.

Almost surely, 2^19942532271 is an apocalyptic number.

19942532271 is a deficient number, since it is larger than the sum of its proper divisors (8863347689).

19942532271 is a wasteful number, since it uses less digits than its factorization.

19942532271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215836925 (or 2215836922 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 19942532271 in words is "nineteen billion, nine hundred forty-two million, five hundred thirty-two thousand, two hundred seventy-one".