2778998479296 has 168 divisors, whose sum is σ = 8177061008304. Its totient is φ = 831965921280.

The previous prime is 2778998479247. The next prime is 2778998479303. The reversal of 2778998479296 is 6929748998772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43216 + ... + 2357936.

Almost surely, 2^{2778998479296} is an apocalyptic number.

2778998479296 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2778998479296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4088530504152).

2778998479296 is an abundant number, since it is smaller than the sum of its proper divisors (5398062529008).

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

2778998479296 is a wasteful number, since it uses less digits than its factorization.

2778998479296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314799 (or 2314776 counting only the distinct ones).

The product of its digits is 13826598912, while the sum is 87.

The spelling of 2778998479296 in words is "two trillion, seven hundred seventy-eight billion, nine hundred ninety-eight million, four hundred seventy-nine thousand, two hundred ninety-six".