35940996196561 has 3 divisors (see below), whose sum is σ = 35941002191643. Its totient is φ = 35940990201480.

The previous prime is 35940996196549. The next prime is 35940996196583. The reversal of 35940996196561 is 16569169904953.

The square root of 35940996196561 is 5995081.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7980167356561 + 27960828840000 = 2824919^2 + 5287800^2 .

It is not a de Polignac number, because 35940996196561 - 2¹³ = 35940996188369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35940990196561) 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 2 ways as a sum of consecutive naturals, for example, 2997541 + ... + 8992621.

It is an arithmetic number, because the mean of its divisors is an integer number (11980334063881).

Almost surely, 2^{35940996196561} is an apocalyptic number.

35940996196561 is the 5995081-st square number.

35940996196561 is the 2997541-st centered octagonal number.

It is an amenable number.

35940996196561 is a deficient number, since it is larger than the sum of its proper divisors (5995082).

35940996196561 is an frugal number, since it uses more digits than its factorization.

35940996196561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11990162 (or 5995081 counting only the distinct ones).

The product of its (nonzero) digits is 425152800, while the sum is 73.

The spelling of 35940996196561 in words is "thirty-five trillion, nine hundred forty billion, nine hundred ninety-six million, one hundred ninety-six thousand, five hundred sixty-one".