80764761999 has 8 divisors (see below), whose sum is σ = 107696228400. Its totient is φ = 53838235136.

The previous prime is 80764761953. The next prime is 80764762037. The reversal of 80764761999 is 99916746708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80764761999 - 2¹² = 80764757903 is a prime.

It is a super-2 number, since 2×80764761999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80764761299) 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, 1196562 + ... + 1262255.

It is an arithmetic number, because the mean of its divisors is an integer number (13462028550).

Almost surely, 2^80764761999 is an apocalyptic number.

80764761999 is a deficient number, since it is larger than the sum of its proper divisors (26931466401).

80764761999 is a wasteful number, since it uses less digits than its factorization.

80764761999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469769.

The product of its (nonzero) digits is 41150592, while the sum is 66.

The spelling of 80764761999 in words is "eighty billion, seven hundred sixty-four million, seven hundred sixty-one thousand, nine hundred ninety-nine".