361856969879 has 4 divisors (see below), whose sum is σ = 367990138920. Its totient is φ = 355723800840.

The previous prime is 361856969869. The next prime is 361856969941. The reversal of 361856969879 is 978969658163.

It is a happy number.

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 361856969879 - 2²⁴ = 361840192663 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 (361856969869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3066584432 + ... + 3066584549.

It is an arithmetic number, because the mean of its divisors is an integer number (91997534730).

Almost surely, 2^361856969879 is an apocalyptic number.

361856969879 is a deficient number, since it is larger than the sum of its proper divisors (6133169041).

361856969879 is an equidigital number, since it uses as much as digits as its factorization.

361856969879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6133169040.

The product of its digits is 1058158080, while the sum is 77.

The spelling of 361856969879 in words is "three hundred sixty-one billion, eight hundred fifty-six million, nine hundred sixty-nine thousand, eight hundred seventy-nine".