2278978052529 has 16 divisors (see below), whose sum is σ = 3199123097600. Its totient is φ = 1439103725136.

The previous prime is 2278978052501. The next prime is 2278978052543. The reversal of 2278978052529 is 9252508798722.

It is not a de Polignac number, because 2278978052529 - 2²⁴ = 2278961275313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2278978052529.

It is not an unprimeable number, because it can be changed into a prime (2278978052129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3153589 + ... + 3808290.

It is an arithmetic number, because the mean of its divisors is an integer number (199945193600).

Almost surely, 2^{2278978052529} is an apocalyptic number.

It is an amenable number.

2278978052529 is a deficient number, since it is larger than the sum of its proper divisors (920145045071).

2278978052529 is a wasteful number, since it uses less digits than its factorization.

2278978052529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967644.

The product of its (nonzero) digits is 101606400, while the sum is 66.

The spelling of 2278978052529 in words is "two trillion, two hundred seventy-eight billion, nine hundred seventy-eight million, fifty-two thousand, five hundred twenty-nine".