80340185657440 has 96 divisors (see below), whose sum is σ = 195792259277664. Its totient is φ = 31129788764160.

The previous prime is 80340185657423. The next prime is 80340185657441. The reversal of 80340185657440 is 4475658104308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80340185657441) 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, 28548181 + ... + 31235860.

It is an arithmetic number, because the mean of its divisors is an integer number (2039502700809).

Almost surely, 2^{80340185657440} is an apocalyptic number.

80340185657440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80340185657440 is an abundant number, since it is smaller than the sum of its proper divisors (115452073620224).

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

80340185657440 is a wasteful number, since it uses less digits than its factorization.

80340185657440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59784320 (or 59784312 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 80340185657440 in words is "eighty trillion, three hundred forty billion, one hundred eighty-five million, six hundred fifty-seven thousand, four hundred forty".