2781406322146 has 32 divisors (see below), whose sum is σ = 4321798778880. Its totient is φ = 1341779656896.

The previous prime is 2781406322137. The next prime is 2781406322147. The reversal of 2781406322146 is 6412236041872.

It is a super-2 number, since 2×2781406322146² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2781406322096 and 2781406322105.

It is not an unprimeable number, because it can be changed into a prime (2781406322147) 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, 1329471 + ... + 2707453.

It is an arithmetic number, because the mean of its divisors is an integer number (135056211840).

Almost surely, 2^{2781406322146} is an apocalyptic number.

2781406322146 is a deficient number, since it is larger than the sum of its proper divisors (1540392456734).

2781406322146 is a wasteful number, since it uses less digits than its factorization.

2781406322146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378338.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 2781406322146 in words is "two trillion, seven hundred eighty-one billion, four hundred six million, three hundred twenty-two thousand, one hundred forty-six".