13138267666572 has 36 divisors (see below), whose sum is σ = 33210820305936. Its totient is φ = 4379396279520.

The previous prime is 13138267666571. The next prime is 13138267666607. The reversal of 13138267666572 is 27566676283131.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13138267666572² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13138267666571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5539297 + ... + 7547207.

It is an arithmetic number, because the mean of its divisors is an integer number (922522786276).

Almost surely, 2^{13138267666572} is an apocalyptic number.

13138267666572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13138267666572 is an abundant number, since it is smaller than the sum of its proper divisors (20072552639364).

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

13138267666572 is a wasteful number, since it uses less digits than its factorization.

13138267666572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189678 (or 2189673 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 13138267666572 in words is "thirteen trillion, one hundred thirty-eight billion, two hundred sixty-seven million, six hundred sixty-six thousand, five hundred seventy-two".