1026920609780 has 24 divisors (see below), whose sum is σ = 2322420456552. Its totient is φ = 379170686592.

The previous prime is 1026920609779. The next prime is 1026920609797. The reversal of 1026920609780 is 879060296201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 185070319204 + 841850290576 = 430198^2 + 917524^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1974847067 + ... + 1974847586.

It is an arithmetic number, because the mean of its divisors is an integer number (96767519023).

Almost surely, 2^{1026920609780} is an apocalyptic number.

1026920609780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026920609780 is an abundant number, since it is smaller than the sum of its proper divisors (1295499846772).

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

1026920609780 is a wasteful number, since it uses less digits than its factorization.

1026920609780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949694675 (or 3949694673 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 1026920609780 in words is "one trillion, twenty-six billion, nine hundred twenty million, six hundred nine thousand, seven hundred eighty".