190542720717 has 12 divisors (see below), whose sum is σ = 275240309344. Its totient is φ = 127022972040.

The previous prime is 190542720713. The next prime is 190542720721. The reversal of 190542720717 is 717027245091.

190542720717 is a `hidden beast` number, since 1 + 9 + 0 + 5 + 427 + 207 + 17 = 666.

It is an interprime number because it is at equal distance from previous prime (190542720713) and next prime (190542720721).

It is not a de Polignac number, because 190542720717 - 2² = 190542720713 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 (190542720713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234163 + ... + 660240.

Almost surely, 2^190542720717 is an apocalyptic number.

It is an amenable number.

190542720717 is a deficient number, since it is larger than the sum of its proper divisors (84697588627).

190542720717 is a wasteful number, since it uses less digits than its factorization.

190542720717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918080 (or 918077 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The spelling of 190542720717 in words is "one hundred ninety billion, five hundred forty-two million, seven hundred twenty thousand, seven hundred seventeen".