196660777790 has 8 divisors (see below), whose sum is σ = 353989400040. Its totient is φ = 78664311112.

The previous prime is 196660777759. The next prime is 196660777793. The reversal of 196660777790 is 97777066691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196660777793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9833038880 + ... + 9833038899.

It is an arithmetic number, because the mean of its divisors is an integer number (44248675005).

Almost surely, 2^196660777790 is an apocalyptic number.

196660777790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196660777790 is a deficient number, since it is larger than the sum of its proper divisors (157328622250).

196660777790 is a wasteful number, since it uses less digits than its factorization.

196660777790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19666077786.

The product of its (nonzero) digits is 42007896, while the sum is 65.

The spelling of 196660777790 in words is "one hundred ninety-six billion, six hundred sixty million, seven hundred seventy-seven thousand, seven hundred ninety".