80918622050 has 90 divisors (see below), whose sum is σ = 175797087459. Its totient is φ = 27709735200.

The previous prime is 80918621957. The next prime is 80918622091. The reversal of 80918622050 is 5022681908.

It can be written as a sum of positive squares in 5 ways, for example, as 12734445409 + 68184176641 = 112847^2 + 261121^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=201145.

It is a junction number, because it is equal to n+sod(n) for n = 80918621989 and 80918622007.

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 in 44 ways as a sum of consecutive naturals, for example, 98560640 + ... + 98561460.

Almost surely, 2^80918622050 is an apocalyptic number.

80918622050 is an abundant number, since it is smaller than the sum of its proper divisors (94878465409).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80918622050 is an frugal number, since it uses more digits than its factorization.

80918622050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 80918622050 in words is "eighty billion, nine hundred eighteen million, six hundred twenty-two thousand, fifty".