1026437720640 has 112 divisors (see below), whose sum is σ = 3371317087680. Its totient is φ = 264278210560.

The previous prime is 1026437720597. The next prime is 1026437720663. The reversal of 1026437720640 is 460277346201.

It is a junction number, because it is equal to n+sod(n) for n = 1026437720592 and 1026437720601.

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, 18406746 + ... + 18462425.

Almost surely, 2^{1026437720640} is an apocalyptic number.

1026437720640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026437720640 is an abundant number, since it is smaller than the sum of its proper divisors (2344879367040).

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

1026437720640 is a wasteful number, since it uses less digits than its factorization.

1026437720640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36869220 (or 36869210 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 1026437720640 in words is "one trillion, twenty-six billion, four hundred thirty-seven million, seven hundred twenty thousand, six hundred forty".