764216887811 has 6 divisors (see below), whose sum is σ = 827524795860. Its totient is φ = 705430973208.

The previous prime is 764216887799. The next prime is 764216887817. The reversal of 764216887811 is 118788612467.

It is a de Polignac number, because none of the positive numbers 2^k-764216887811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764216887817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2260996541 + ... + 2260996878.

It is an arithmetic number, because the mean of its divisors is an integer number (137920799310).

Almost surely, 2^764216887811 is an apocalyptic number.

764216887811 is a deficient number, since it is larger than the sum of its proper divisors (63307908049).

764216887811 is a wasteful number, since it uses less digits than its factorization.

764216887811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521993445 (or 4521993432 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 59.

The spelling of 764216887811 in words is "seven hundred sixty-four billion, two hundred sixteen million, eight hundred eighty-seven thousand, eight hundred eleven".