35961243681 has 24 divisors (see below), whose sum is σ = 52796135392. Its totient is φ = 21756398400.

The previous prime is 35961243679. The next prime is 35961243691. The reversal of 35961243681 is 18634216953.

It is not a de Polignac number, because 35961243681 - 2¹ = 35961243679 is a prime.

It is a super-2 number, since 2×35961243681² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 35961243681.

It is not an unprimeable number, because it can be changed into a prime (35961243631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120525 + ... + 294021.

Almost surely, 2^35961243681 is an apocalyptic number.

It is an amenable number.

35961243681 is a deficient number, since it is larger than the sum of its proper divisors (16834891711).

35961243681 is a wasteful number, since it uses less digits than its factorization.

35961243681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174093 (or 174082 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The spelling of 35961243681 in words is "thirty-five billion, nine hundred sixty-one million, two hundred forty-three thousand, six hundred eighty-one".