787968869787 has 24 divisors (see below), whose sum is σ = 1241837728560. Its totient is φ = 477483886080.

The previous prime is 787968869783. The next prime is 787968869797.

787968869787 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 787968869787 - 2² = 787968869783 is a prime.

It is a super-2 number, since 2×787968869787² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 787968869697 and 787968869706.

It is not an unprimeable number, because it can be changed into a prime (787968869783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46039 + ... + 1256207.

It is an arithmetic number, because the mean of its divisors is an integer number (51743238690).

Almost surely, 2^787968869787 is an apocalyptic number.

787968869787 is a deficient number, since it is larger than the sum of its proper divisors (453868858773).

787968869787 is a wasteful number, since it uses less digits than its factorization.

787968869787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216763 (or 1216760 counting only the distinct ones).

The product of its digits is 28677390336, while the sum is 90.

The spelling of 787968869787 in words is "seven hundred eighty-seven billion, nine hundred sixty-eight million, eight hundred sixty-nine thousand, seven hundred eighty-seven".