80719369020 has 120 divisors (see below), whose sum is σ = 253951158384. Its totient is φ = 21462983424.

The previous prime is 80719369019. The next prime is 80719369037. The reversal of 80719369020 is 2096391708.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 490344 + ... + 633936.

Almost surely, 2^80719369020 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 80719369020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126975579192).

80719369020 is an abundant number, since it is smaller than the sum of its proper divisors (173231789364).

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

80719369020 is a wasteful number, since it uses less digits than its factorization.

80719369020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143961 (or 143950 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 80719369020 in words is "eighty billion, seven hundred nineteen million, three hundred sixty-nine thousand, twenty".