35661894642 has 36 divisors (see below), whose sum is σ = 84930330030. Its totient is φ = 10806634080.

The previous prime is 35661894601. The next prime is 35661894649. The reversal of 35661894642 is 24649816653.

35661894642 is a `hidden beast` number, since 3 + 566 + 18 + 9 + 4 + 64 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18782428401 + 16879466241 = 137049^2 + 129921^2 .

It is not an unprimeable number, because it can be changed into a prime (35661894649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8184667 + ... + 8189022.

Almost surely, 2^35661894642 is an apocalyptic number.

35661894642 is an abundant number, since it is smaller than the sum of its proper divisors (49268435388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

35661894642 is a wasteful number, since it uses less digits than its factorization.

35661894642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16373719 (or 16373705 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 35661894642 in words is "thirty-five billion, six hundred sixty-one million, eight hundred ninety-four thousand, six hundred forty-two".