196662136881 has 64 divisors (see below), whose sum is σ = 325175482368. Its totient is φ = 103151397888.

The previous prime is 196662136873. The next prime is 196662136907. The reversal of 196662136881 is 188631266691.

It is not a de Polignac number, because 196662136881 - 2³ = 196662136873 is a prime.

It is a super-2 number, since 2×196662136881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (196662136861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10475355 + ... + 10494111.

It is an arithmetic number, because the mean of its divisors is an integer number (5080866912).

Almost surely, 2^196662136881 is an apocalyptic number.

It is an amenable number.

196662136881 is a deficient number, since it is larger than the sum of its proper divisors (128513345487).

196662136881 is a wasteful number, since it uses less digits than its factorization.

196662136881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19510.

The product of its digits is 4478976, while the sum is 57.

The spelling of 196662136881 in words is "one hundred ninety-six billion, six hundred sixty-two million, one hundred thirty-six thousand, eight hundred eighty-one".