13987770717244 has 24 divisors (see below), whose sum is σ = 25543263180960. Its totient is φ = 6689704511424.

The previous prime is 13987770717241. The next prime is 13987770717259. The reversal of 13987770717244 is 44271707778931.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13987770717244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13987770717241) 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, 5335602 + ... + 7512934.

It is an arithmetic number, because the mean of its divisors is an integer number (1064302632540).

Almost surely, 2^{13987770717244} is an apocalyptic number.

It is an amenable number.

13987770717244 is a deficient number, since it is larger than the sum of its proper divisors (11555492463716).

13987770717244 is a wasteful number, since it uses less digits than its factorization.

13987770717244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247189 (or 2247187 counting only the distinct ones).

The product of its (nonzero) digits is 116169984, while the sum is 67.

The spelling of 13987770717244 in words is "thirteen trillion, nine hundred eighty-seven billion, seven hundred seventy million, seven hundred seventeen thousand, two hundred forty-four".