13777712002 has 4 divisors (see below), whose sum is σ = 20666568006. Its totient is φ = 6888856000.

The previous prime is 13777711957. The next prime is 13777712009. The reversal of 13777712002 is 20021777731.

13777712002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20021777731 = 137 ⋅146144363.

It can be written as a sum of positive squares in only one way, i.e., 13651351921 + 126360081 = 116839^2 + 11241^2 .

It is not an unprimeable number, because it can be changed into a prime (13777712009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444427999 + ... + 3444428002.

Almost surely, 2^13777712002 is an apocalyptic number.

13777712002 is a deficient number, since it is larger than the sum of its proper divisors (6888856004).

13777712002 is an equidigital number, since it uses as much as digits as its factorization.

13777712002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888856003.

The product of its (nonzero) digits is 28812, while the sum is 37.

The spelling of 13777712002 in words is "thirteen billion, seven hundred seventy-seven million, seven hundred twelve thousand, two".