80820786554 has 16 divisors (see below), whose sum is σ = 122397095040. Its totient is φ = 40022080560.

The previous prime is 80820786551. The next prime is 80820786569. The reversal of 80820786554 is 45568702808.

It is a junction number, because it is equal to n+sod(n) for n = 80820786496 and 80820786505.

It is not an unprimeable number, because it can be changed into a prime (80820786551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423587 + ... + 584009.

It is an arithmetic number, because the mean of its divisors is an integer number (7649818440).

Almost surely, 2^80820786554 is an apocalyptic number.

80820786554 is a deficient number, since it is larger than the sum of its proper divisors (41576308486).

80820786554 is a wasteful number, since it uses less digits than its factorization.

80820786554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162845.

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 80820786554 in words is "eighty billion, eight hundred twenty million, seven hundred eighty-six thousand, five hundred fifty-four".