190566056791 has 16 divisors (see below), whose sum is σ = 212335861248. Its totient is φ = 169537968000.

The previous prime is 190566056789. The next prime is 190566056803. The reversal of 190566056791 is 197650665091.

It is a cyclic number.

It is not a de Polignac number, because 190566056791 - 2¹ = 190566056789 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 (190566057791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8401816 + ... + 8424466.

It is an arithmetic number, because the mean of its divisors is an integer number (13270991328).

Almost surely, 2^190566056791 is an apocalyptic number.

190566056791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

190566056791 is a deficient number, since it is larger than the sum of its proper divisors (21769804457).

190566056791 is a wasteful number, since it uses less digits than its factorization.

190566056791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38982.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 190566056791 in words is "one hundred ninety billion, five hundred sixty-six million, fifty-six thousand, seven hundred ninety-one".