2778349600231 has 4 divisors (see below), whose sum is σ = 2778359186952. Its totient is φ = 2778340013512.

The previous prime is 2778349600217. The next prime is 2778349600297. The reversal of 2778349600231 is 1320069438772.

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 2778349600231 - 2²¹ = 2778347503079 is a prime.

It is a super-2 number, since 2×2778349600231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778349100231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4344640 + ... + 4942933.

It is an arithmetic number, because the mean of its divisors is an integer number (694589796738).

Almost surely, 2^{2778349600231} is an apocalyptic number.

2778349600231 is a deficient number, since it is larger than the sum of its proper divisors (9586721).

2778349600231 is an equidigital number, since it uses as much as digits as its factorization.

2778349600231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9586720.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 2778349600231 in words is "two trillion, seven hundred seventy-eight billion, three hundred forty-nine million, six hundred thousand, two hundred thirty-one".