12687451090 has 8 divisors (see below), whose sum is σ = 22837411980. Its totient is φ = 5074980432.

The previous prime is 12687451013. The next prime is 12687451097. The reversal of 12687451090 is 9015478621.

It can be written as a sum of positive squares in 2 ways, for example, as 12055381209 + 632069881 = 109797^2 + 25141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12687451090² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12687451097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634372545 + ... + 634372564.

Almost surely, 2^12687451090 is an apocalyptic number.

12687451090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12687451090 is a deficient number, since it is larger than the sum of its proper divisors (10149960890).

12687451090 is a wasteful number, since it uses less digits than its factorization.

12687451090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268745116.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 12687451090 in words is "twelve billion, six hundred eighty-seven million, four hundred fifty-one thousand, ninety".