1026426781646 has 8 divisors (see below), whose sum is σ = 1759588768560. Its totient is φ = 439897192128.

The previous prime is 1026426781631. The next prime is 1026426781663. The reversal of 1026426781646 is 6461876246201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36658099331 + ... + 36658099358.

It is an arithmetic number, because the mean of its divisors is an integer number (219948596070).

Almost surely, 2^{1026426781646} is an apocalyptic number.

1026426781646 is a deficient number, since it is larger than the sum of its proper divisors (733161986914).

1026426781646 is an equidigital number, since it uses as much as digits as its factorization.

1026426781646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73316198698.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 1026426781646 in words is "one trillion, twenty-six billion, four hundred twenty-six million, seven hundred eighty-one thousand, six hundred forty-six".