80820896386 has 4 divisors (see below), whose sum is σ = 121231344582. Its totient is φ = 40410448192.

The previous prime is 80820896363. The next prime is 80820896399. The reversal of 80820896386 is 68369802808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80488527025 + 332369361 = 283705^2 + 18231^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80820896386.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20205224095 + ... + 20205224098.

Almost surely, 2^80820896386 is an apocalyptic number.

80820896386 is a deficient number, since it is larger than the sum of its proper divisors (40410448196).

80820896386 is a wasteful number, since it uses less digits than its factorization.

80820896386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40410448195.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 80820896386 in words is "eighty billion, eight hundred twenty million, eight hundred ninety-six thousand, three hundred eighty-six".