80378867712 has 416 divisors, whose sum is σ = 254301062400. Its totient is φ = 22259957760.

The previous prime is 80378867707. The next prime is 80378867743. The reversal of 80378867712 is 21776887308.

It is a tau number, because it is divible by the number of its divisors (416).

It is a super-2 number, since 2×80378867712² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261820263 + ... + 261820569.

Almost surely, 2^80378867712 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 80378867712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127150531200).

80378867712 is an abundant number, since it is smaller than the sum of its proper divisors (173922194688).

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

80378867712 is a wasteful number, since it uses less digits than its factorization.

80378867712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 80378867712 in words is "eighty billion, three hundred seventy-eight million, eight hundred sixty-seven thousand, seven hundred twelve".