1373077805560 has 128 divisors (see below), whose sum is σ = 3279963611520. Its totient is φ = 515533750272.

The previous prime is 1373077805521. The next prime is 1373077805563. The reversal of 1373077805560 is 655087703731.

It is a junction number, because it is equal to n+sod(n) for n = 1373077805498 and 1373077805507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373077805563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 642524812 + ... + 642526948.

It is an arithmetic number, because the mean of its divisors is an integer number (25624715715).

Almost surely, 2^{1373077805560} is an apocalyptic number.

1373077805560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373077805560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639981805760).

1373077805560 is an abundant number, since it is smaller than the sum of its proper divisors (1906885805960).

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

1373077805560 is a wasteful number, since it uses less digits than its factorization.

1373077805560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4261 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 1373077805560 in words is "one trillion, three hundred seventy-three billion, seventy-seven million, eight hundred five thousand, five hundred sixty".