402066203242461 has 4 divisors (see below), whose sum is σ = 536088270989952. Its totient is φ = 268044135494972.

The previous prime is 402066203242447. The next prime is 402066203242489. The reversal of 402066203242461 is 164242302660204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402066203242461 - 2³⁰ = 402065129500637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402066203242661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67011033873741 + ... + 67011033873746.

It is an arithmetic number, because the mean of its divisors is an integer number (134022067747488).

Almost surely, 2^{402066203242461} is an apocalyptic number.

It is an amenable number.

402066203242461 is a deficient number, since it is larger than the sum of its proper divisors (134022067747491).

402066203242461 is a wasteful number, since it uses less digits than its factorization.

402066203242461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134022067747490.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 402066203242461 in words is "four hundred two trillion, sixty-six billion, two hundred three million, two hundred forty-two thousand, four hundred sixty-one".