13751777812 has 6 divisors (see below), whose sum is σ = 24065611178. Its totient is φ = 6875888904.

The previous prime is 13751777803. The next prime is 13751777857. The reversal of 13751777812 is 21877715731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9332719236 + 4419058576 = 96606^2 + 66476^2 .

It is a super-2 number, since 2×13751777812² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1718972223 + ... + 1718972230.

Almost surely, 2^13751777812 is an apocalyptic number.

It is an amenable number.

13751777812 is a deficient number, since it is larger than the sum of its proper divisors (10313833366).

13751777812 is a wasteful number, since it uses less digits than its factorization.

13751777812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437944457 (or 3437944455 counting only the distinct ones).

The product of its digits is 576240, while the sum is 49.

The spelling of 13751777812 in words is "thirteen billion, seven hundred fifty-one million, seven hundred seventy-seven thousand, eight hundred twelve".