76705173204661 has 4 divisors (see below), whose sum is σ = 76777332352672. Its totient is φ = 76633014056652.

The previous prime is 76705173204659. The next prime is 76705173204691. The reversal of 76705173204661 is 16640237150767.

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 76705173204661 - 2¹ = 76705173204659 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 (76705173204641) 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, 36079572411 + ... + 36079574536.

It is an arithmetic number, because the mean of its divisors is an integer number (19194333088168).

Almost surely, 2^{76705173204661} is an apocalyptic number.

It is an amenable number.

76705173204661 is a deficient number, since it is larger than the sum of its proper divisors (72159148011).

76705173204661 is a wasteful number, since it uses less digits than its factorization.

76705173204661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72159148010.

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 76705173204661 in words is "seventy-six trillion, seven hundred five billion, one hundred seventy-three million, two hundred four thousand, six hundred sixty-one".