361806664826879 has 4 divisors (see below), whose sum is σ = 361808210959176. Its totient is φ = 361805118694584.

The previous prime is 361806664826857. The next prime is 361806664826897. The reversal of 361806664826879 is 978628466608163.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 361806664826879 - 2⁴⁴ = 344214478782463 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 (361806664826279) 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, 772715084 + ... + 773183169.

It is an arithmetic number, because the mean of its divisors is an integer number (90452052739794).

Almost surely, 2^{361806664826879} is an apocalyptic number.

361806664826879 is a deficient number, since it is larger than the sum of its proper divisors (1546132297).

361806664826879 is a wasteful number, since it uses less digits than its factorization.

361806664826879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546132296.

The product of its (nonzero) digits is 6019743744, while the sum is 80.

The spelling of 361806664826879 in words is "three hundred sixty-one trillion, eight hundred six billion, six hundred sixty-four million, eight hundred twenty-six thousand, eight hundred seventy-nine".