15787880069 has 8 divisors (see below), whose sum is σ = 17124653280. Its totient is φ = 14468581296.

The previous prime is 15787880063. The next prime is 15787880099. The reversal of 15787880069 is 96008878751.

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

It is not a de Polignac number, because 15787880069 - 2¹² = 15787875973 is a prime.

It is a super-2 number, since 2×15787880069² (a number of 21 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 (15787880063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4366727 + ... + 4370340.

It is an arithmetic number, because the mean of its divisors is an integer number (2140581660).

Almost surely, 2^15787880069 is an apocalyptic number.

It is an amenable number.

15787880069 is a deficient number, since it is larger than the sum of its proper divisors (1336773211).

15787880069 is a wasteful number, since it uses less digits than its factorization.

15787880069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737219.

The product of its (nonzero) digits is 6773760, while the sum is 59.

The spelling of 15787880069 in words is "fifteen billion, seven hundred eighty-seven million, eight hundred eighty thousand, sixty-nine".