36405145661 has 8 divisors (see below), whose sum is σ = 37016839584. Its totient is φ = 35795461680.

The previous prime is 36405145597. The next prime is 36405145723. The reversal of 36405145661 is 16654150463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36405145661 - 2⁶ = 36405145597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36405144661) 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 7 ways as a sum of consecutive naturals, for example, 465935 + ... + 538428.

It is an arithmetic number, because the mean of its divisors is an integer number (4627104948).

Almost surely, 2^36405145661 is an apocalyptic number.

It is an amenable number.

36405145661 is a deficient number, since it is larger than the sum of its proper divisors (611693923).

36405145661 is a wasteful number, since it uses less digits than its factorization.

36405145661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004971.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 36405145661 in words is "thirty-six billion, four hundred five million, one hundred forty-five thousand, six hundred sixty-one".