2778888999998 has 8 divisors (see below), whose sum is σ = 4168439089920. Its totient is φ = 1389409303360.

The previous prime is 2778888999949. The next prime is 2778889000007. The reversal of 2778888999998 is 8999998888772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2778888999898 and 2778888999907.

It is a congruent number.

It is an unprimeable number.

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, 17499518 + ... + 17657601.

It is an arithmetic number, because the mean of its divisors is an integer number (521054886240).

Almost surely, 2^{2778888999998} is an apocalyptic number.

2778888999998 is a deficient number, since it is larger than the sum of its proper divisors (1389550089922).

2778888999998 is a wasteful number, since it uses less digits than its factorization.

2778888999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35196642.

The product of its digits is 189621927936, while the sum is 101.

The spelling of 2778888999998 in words is "two trillion, seven hundred seventy-eight billion, eight hundred eighty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-eight".