13187465780 has 24 divisors (see below), whose sum is σ = 27772145352. Its totient is φ = 5260040192.

The previous prime is 13187465779. The next prime is 13187465783. The reversal of 13187465780 is 8756478131.

It can be written as a sum of positive squares in 4 ways, for example, as 2278916644 + 10908549136 = 47738^2 + 104444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13187465783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926897 + ... + 941016.

It is an arithmetic number, because the mean of its divisors is an integer number (1157172723).

Almost surely, 2^13187465780 is an apocalyptic number.

13187465780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13187465780 is an abundant number, since it is smaller than the sum of its proper divisors (14584679572).

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

13187465780 is a wasteful number, since it uses less digits than its factorization.

13187465780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868275 (or 1868273 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 13187465780 in words is "thirteen billion, one hundred eighty-seven million, four hundred sixty-five thousand, seven hundred eighty".