13067557780 has 12 divisors (see below), whose sum is σ = 27441871380. Its totient is φ = 5227023104.

The previous prime is 13067557753. The next prime is 13067557873. The reversal of 13067557780 is 8775576031.

It can be written as a sum of positive squares in 2 ways, for example, as 8245366416 + 4822191364 = 90804^2 + 69442^2 .

It is a super-2 number, since 2×13067557780² (a number of 21 digits) contains 22 as substring.

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, 326688925 + ... + 326688964.

It is an arithmetic number, because the mean of its divisors is an integer number (2286822615).

Almost surely, 2^13067557780 is an apocalyptic number.

13067557780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13067557780 is an abundant number, since it is smaller than the sum of its proper divisors (14374313600).

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

13067557780 is a wasteful number, since it uses less digits than its factorization.

13067557780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653377898 (or 653377896 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 13067557780 in words is "thirteen billion, sixty-seven million, five hundred fifty-seven thousand, seven hundred eighty".