12677477721 has 8 divisors (see below), whose sum is σ = 17360149824. Its totient is φ = 8223228720.

The previous prime is 12677477719. The next prime is 12677477737. The reversal of 12677477721 is 12777477621.

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

It is not a de Polignac number, because 12677477721 - 2¹ = 12677477719 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12677477821) 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, 57105645 + ... + 57105866.

It is an arithmetic number, because the mean of its divisors is an integer number (2170018728).

Almost surely, 2^12677477721 is an apocalyptic number.

It is an amenable number.

12677477721 is a deficient number, since it is larger than the sum of its proper divisors (4682672103).

12677477721 is a wasteful number, since it uses less digits than its factorization.

12677477721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114211551.

The product of its digits is 1613472, while the sum is 51.

The spelling of 12677477721 in words is "twelve billion, six hundred seventy-seven million, four hundred seventy-seven thousand, seven hundred twenty-one".