196681158535 has 32 divisors (see below), whose sum is σ = 245684275200. Its totient is φ = 150969530880.

The previous prime is 196681158497. The next prime is 196681158551. The reversal of 196681158535 is 535851186691.

It is a happy number.

It is not a de Polignac number, because 196681158535 - 2¹³ = 196681150343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196681158535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70518921 + ... + 70521709.

It is an arithmetic number, because the mean of its divisors is an integer number (7677633600).

Almost surely, 2^196681158535 is an apocalyptic number.

196681158535 is a deficient number, since it is larger than the sum of its proper divisors (49003116665).

196681158535 is a wasteful number, since it uses less digits than its factorization.

196681158535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691.

The product of its digits is 7776000, while the sum is 58.

It can be divided in two parts, 196681 and 158535, that added together give a square (355216 = 596²).

The spelling of 196681158535 in words is "one hundred ninety-six billion, six hundred eighty-one million, one hundred fifty-eight thousand, five hundred thirty-five".