12787039755989 has 8 divisors (see below), whose sum is σ = 13199898270720. Its totient is φ = 12374204576400.

The previous prime is 12787039755979. The next prime is 12787039756027. The reversal of 12787039755989 is 98955793078721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12787039755989 is a prime.

It is a super-2 number, since 2×12787039755989² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12787039755979) 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, 4716749 + ... + 6915330.

It is an arithmetic number, because the mean of its divisors is an integer number (1649987283840).

Almost surely, 2^{12787039755989} is an apocalyptic number.

It is an amenable number.

12787039755989 is a deficient number, since it is larger than the sum of its proper divisors (412858514731).

12787039755989 is a wasteful number, since it uses less digits than its factorization.

12787039755989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667571.

The product of its (nonzero) digits is 2400451200, while the sum is 80.

The spelling of 12787039755989 in words is "twelve trillion, seven hundred eighty-seven billion, thirty-nine million, seven hundred fifty-five thousand, nine hundred eighty-nine".