7782561426 has 32 divisors (see below), whose sum is σ = 16052243328. Its totient is φ = 2513583360.

The previous prime is 7782561401. The next prime is 7782561467. The reversal of 7782561426 is 6241652877.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19230 + ... + 126233.

It is an arithmetic number, because the mean of its divisors is an integer number (501632604).

Almost surely, 2^7782561426 is an apocalyptic number.

7782561426 is an abundant number, since it is smaller than the sum of its proper divisors (8269681902).

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

7782561426 is a wasteful number, since it uses less digits than its factorization.

7782561426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145746.

The product of its digits is 1128960, while the sum is 48.

The square root of 7782561426 is about 88218.8269362045. The cubic root of 7782561426 is about 1981.7134290791.

The spelling of 7782561426 in words is "seven billion, seven hundred eighty-two million, five hundred sixty-one thousand, four hundred twenty-six".