80918351522 has 4 divisors (see below), whose sum is σ = 121377527286. Its totient is φ = 40459175760.

The previous prime is 80918351483. The next prime is 80918351539. The reversal of 80918351522 is 22515381908.

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., 80287789201 + 630562321 = 283351^2 + 25111^2 .

It is a super-2 number, since 2×80918351522² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20229587879 + ... + 20229587882.

Almost surely, 2^80918351522 is an apocalyptic number.

80918351522 is a deficient number, since it is larger than the sum of its proper divisors (40459175764).

80918351522 is a wasteful number, since it uses less digits than its factorization.

80918351522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40459175763.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 80918351522 in words is "eighty billion, nine hundred eighteen million, three hundred fifty-one thousand, five hundred twenty-two".