787967769787 has 16 divisors (see below), whose sum is σ = 868496813280. Its totient is φ = 708927616000.

The previous prime is 787967769781. The next prime is 787967769791.

It is a happy number.

787967769787 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-787967769787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 787967769698 and 787967769707.

It is not an unprimeable number, because it can be changed into a prime (787967769781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2369289 + ... + 2681317.

It is an arithmetic number, because the mean of its divisors is an integer number (54281050830).

Almost surely, 2^787967769787 is an apocalyptic number.

787967769787 is a deficient number, since it is larger than the sum of its proper divisors (80529043493).

787967769787 is a wasteful number, since it uses less digits than its factorization.

787967769787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314414.

The product of its digits is 21956126976, while the sum is 88.

The spelling of 787967769787 in words is "seven hundred eighty-seven billion, nine hundred sixty-seven million, seven hundred sixty-nine thousand, seven hundred eighty-seven".