80051377856 has 56 divisors (see below), whose sum is σ = 161730293760. Its totient is φ = 39306228992.

The previous prime is 80051377823. The next prime is 80051377859. The reversal of 80051377856 is 65877315008.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (80051377859) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 841985 + ... + 932223.

It is an arithmetic number, because the mean of its divisors is an integer number (2888040960).

Almost surely, 2^80051377856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80051377856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80865146880).

80051377856 is an abundant number, since it is smaller than the sum of its proper divisors (81678915904).

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

80051377856 is a wasteful number, since it uses less digits than its factorization.

80051377856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90501 (or 90491 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 80051377856 in words is "eighty billion, fifty-one million, three hundred seventy-seven thousand, eight hundred fifty-six".