766904726871 has 80 divisors (see below), whose sum is σ = 1224820776960. Its totient is φ = 477121993920.

The previous prime is 766904726837. The next prime is 766904726873. The reversal of 766904726871 is 178627409667.

766904726871 is a `hidden beast` number, since 7 + 6 + 6 + 90 + 472 + 6 + 8 + 71 = 666.

It is not a de Polignac number, because 766904726871 - 2¹⁸ = 766904464727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766904726799 and 766904726808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766904726873) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17652586 + ... + 17695976.

It is an arithmetic number, because the mean of its divisors is an integer number (15310259712).

Almost surely, 2^766904726871 is an apocalyptic number.

766904726871 is a deficient number, since it is larger than the sum of its proper divisors (457916050089).

766904726871 is a wasteful number, since it uses less digits than its factorization.

766904726871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43658 (or 43649 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 766904726871 in words is "seven hundred sixty-six billion, nine hundred four million, seven hundred twenty-six thousand, eight hundred seventy-one".