1369517980820 has 54 divisors (see below), whose sum is σ = 3161342577246. Its totient is φ = 497985604160.

The previous prime is 1369517980801. The next prime is 1369517980847. The reversal of 1369517980820 is 280897159631.

It can be written as a sum of positive squares in 3 ways, for example, as 1174844176 + 1368343136644 = 34276^2 + 1169762^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1369517980820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57557486 + ... + 57581274.

Almost surely, 2^{1369517980820} is an apocalyptic number.

1369517980820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1369517980820 is an abundant number, since it is smaller than the sum of its proper divisors (1791824596426).

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

1369517980820 is an frugal number, since it uses more digits than its factorization.

1369517980820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47609 (or 23807 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 1369517980820 in words is "one trillion, three hundred sixty-nine billion, five hundred seventeen million, nine hundred eighty thousand, eight hundred twenty".