13187545990 has 16 divisors (see below), whose sum is σ = 23918788080. Its totient is φ = 5234750560.

The previous prime is 13187545967. The next prime is 13187545997. The reversal of 13187545990 is 9954578131.

It is a super-2 number, since 2×13187545990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13187545997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5032105 + ... + 5034724.

It is an arithmetic number, because the mean of its divisors is an integer number (1494924255).

Almost surely, 2^13187545990 is an apocalyptic number.

13187545990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13187545990 is a deficient number, since it is larger than the sum of its proper divisors (10731242090).

13187545990 is a wasteful number, since it uses less digits than its factorization.

13187545990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066967.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 13187545990 in words is "thirteen billion, one hundred eighty-seven million, five hundred forty-five thousand, nine hundred ninety".