2780143222545 has 24 divisors (see below), whose sum is σ = 5189600683176. Its totient is φ = 1368685893888.

The previous prime is 2780143222543. The next prime is 2780143222589. The reversal of 2780143222545 is 5452223410872.

2780143222545 is a `hidden beast` number, since 2 + 7 + 80 + 1 + 4 + 3 + 2 + 22 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 36505452096 + 2743637770449 = 191064^2 + 1656393^2 .

It is not a de Polignac number, because 2780143222545 - 2¹ = 2780143222543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2780143222545.

It is not an unprimeable number, because it can be changed into a prime (2780143222543) 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 23 ways as a sum of consecutive naturals, for example, 2376190204 + ... + 2376191373.

It is an arithmetic number, because the mean of its divisors is an integer number (216233361799).

Almost surely, 2^{2780143222545} is an apocalyptic number.

It is an amenable number.

2780143222545 is a deficient number, since it is larger than the sum of its proper divisors (2409457460631).

2780143222545 is a wasteful number, since it uses less digits than its factorization.

2780143222545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752381601 (or 4752381598 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 2780143222545 in words is "two trillion, seven hundred eighty billion, one hundred forty-three million, two hundred twenty-two thousand, five hundred forty-five".