35981547897 has 16 divisors (see below), whose sum is σ = 50804641152. Its totient is φ = 22573474560.

The previous prime is 35981547857. The next prime is 35981547913. The reversal of 35981547897 is 79874518953.

It is a happy number.

It is not a de Polignac number, because 35981547897 - 2¹⁹ = 35981023609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (35981547857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346147 + ... + 437927.

It is an arithmetic number, because the mean of its divisors is an integer number (3175290072).

Almost surely, 2^35981547897 is an apocalyptic number.

It is an amenable number.

35981547897 is a deficient number, since it is larger than the sum of its proper divisors (14823093255).

35981547897 is a wasteful number, since it uses less digits than its factorization.

35981547897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99488.

The product of its digits is 76204800, while the sum is 66.

The spelling of 35981547897 in words is "thirty-five billion, nine hundred eighty-one million, five hundred forty-seven thousand, eight hundred ninety-seven".