2778813262452 has 24 divisors (see below), whose sum is σ = 6485189108832. Its totient is φ = 926086588000.

The previous prime is 2778813262427. The next prime is 2778813262453. The reversal of 2778813262452 is 2542623188772.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2778813262392 and 2778813262401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778813262453) 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 7 ways as a sum of consecutive naturals, for example, 22999674 + ... + 23120177.

It is an arithmetic number, because the mean of its divisors is an integer number (270216212868).

Almost surely, 2^{2778813262452} is an apocalyptic number.

It is an amenable number.

2778813262452 is an abundant number, since it is smaller than the sum of its proper divisors (3706375846380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2778813262452 is a wasteful number, since it uses less digits than its factorization.

2778813262452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46124879 (or 46124877 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 57.

The spelling of 2778813262452 in words is "two trillion, seven hundred seventy-eight billion, eight hundred thirteen million, two hundred sixty-two thousand, four hundred fifty-two".