80811378032 has 80 divisors (see below), whose sum is σ = 195480345600. Its totient is φ = 31440817920.

The previous prime is 80811378031. The next prime is 80811378059. The reversal of 80811378032 is 23087311808.

It is a super-4 number, since 4×80811378032⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80811378031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840194 + ... + 931422.

It is an arithmetic number, because the mean of its divisors is an integer number (2443504320).

Almost surely, 2^80811378032 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 80811378032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97740172800).

80811378032 is an abundant number, since it is smaller than the sum of its proper divisors (114668967568).

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

80811378032 is a wasteful number, since it uses less digits than its factorization.

80811378032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91974 (or 91968 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 80811378032 in words is "eighty billion, eight hundred eleven million, three hundred seventy-eight thousand, thirty-two".