2800778138158 has 128 divisors (see below), whose sum is σ = 5774030760960. Its totient is φ = 983486085120.

The previous prime is 2800778138153. The next prime is 2800778138161. The reversal of 2800778138158 is 8518318770082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800778138153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 359577328 + ... + 359585116.

It is an arithmetic number, because the mean of its divisors is an integer number (45109615320).

Almost surely, 2^{2800778138158} is an apocalyptic number.

2800778138158 is an abundant number, since it is smaller than the sum of its proper divisors (2973252622802).

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

2800778138158 is a wasteful number, since it uses less digits than its factorization.

2800778138158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12042.

The product of its (nonzero) digits is 6021120, while the sum is 58.

The spelling of 2800778138158 in words is "two trillion, eight hundred billion, seven hundred seventy-eight million, one hundred thirty-eight thousand, one hundred fifty-eight".