815411332766 has 16 divisors (see below), whose sum is σ = 1276443511200. Its totient is φ = 389934259968.

The previous prime is 815411332763. The next prime is 815411332783. The reversal of 815411332766 is 667233114518.

It is a self number, because there is not a number n which added to its sum of digits gives 815411332766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815411332763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620351 + ... + 1419738.

It is an arithmetic number, because the mean of its divisors is an integer number (79777719450).

Almost surely, 2^815411332766 is an apocalyptic number.

815411332766 is a deficient number, since it is larger than the sum of its proper divisors (461032178434).

815411332766 is a wasteful number, since it uses less digits than its factorization.

815411332766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048803.

The product of its digits is 725760, while the sum is 47.

The spelling of 815411332766 in words is "eight hundred fifteen billion, four hundred eleven million, three hundred thirty-two thousand, seven hundred sixty-six".