12887694154 has 4 divisors (see below), whose sum is σ = 19331541234. Its totient is φ = 6443847076.

The previous prime is 12887694137. The next prime is 12887694161. The reversal of 12887694154 is 45149678821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10541744929 + 2345949225 = 102673^2 + 48435^2 .

It is a super-3 number, since 3×12887694154³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12887694095 and 12887694104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221923537 + ... + 3221923540.

Almost surely, 2^12887694154 is an apocalyptic number.

12887694154 is a deficient number, since it is larger than the sum of its proper divisors (6443847080).

12887694154 is an equidigital number, since it uses as much as digits as its factorization.

12887694154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443847079.

The product of its digits is 3870720, while the sum is 55.

The spelling of 12887694154 in words is "twelve billion, eight hundred eighty-seven million, six hundred ninety-four thousand, one hundred fifty-four".