196478902681 has 8 divisors (see below), whose sum is σ = 202398790784. Its totient is φ = 190591101360.

The previous prime is 196478902667. The next prime is 196478902717. The reversal of 196478902681 is 186209874691.

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

It is a cyclic number.

It is not a de Polignac number, because 196478902681 - 2⁷ = 196478902553 is a prime.

It is a super-2 number, since 2×196478902681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196478902621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8009265 + ... + 8033758.

It is an arithmetic number, because the mean of its divisors is an integer number (25299848848).

Almost surely, 2^196478902681 is an apocalyptic number.

It is an amenable number.

196478902681 is a deficient number, since it is larger than the sum of its proper divisors (5919888103).

196478902681 is a wasteful number, since it uses less digits than its factorization.

196478902681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16043391.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 196478902681 in words is "one hundred ninety-six billion, four hundred seventy-eight million, nine hundred two thousand, six hundred eighty-one".