1285687206426 has 32 divisors (see below), whose sum is σ = 2941515158400. Its totient is φ = 366989008896.

The previous prime is 1285687206407. The next prime is 1285687206431. The reversal of 1285687206426 is 6246027865821.

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, 14546791 + ... + 14634906.

It is an arithmetic number, because the mean of its divisors is an integer number (91922348700).

Almost surely, 2^{1285687206426} is an apocalyptic number.

1285687206426 is an abundant number, since it is smaller than the sum of its proper divisors (1655827951974).

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

1285687206426 is a wasteful number, since it uses less digits than its factorization.

1285687206426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29182758.

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 1285687206426 in words is "one trillion, two hundred eighty-five billion, six hundred eighty-seven million, two hundred six thousand, four hundred twenty-six".