80137745 has 32 divisors (see below), whose sum is σ = 106178688. Its totient is φ = 57811968.

The previous prime is 80137741. The next prime is 80137747. The reversal of 80137745 is 54773108.

It is not a de Polignac number, because 80137745 - 2² = 80137741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80137741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260882 + ... + 261188.

It is an arithmetic number, because the mean of its divisors is an integer number (3318084).

Almost surely, 2^80137745 is an apocalyptic number.

80137745 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80137745 is a deficient number, since it is larger than the sum of its proper divisors (26040943).

80137745 is a wasteful number, since it uses less digits than its factorization.

80137745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 80137745 is about 8951.9687778723. The cubic root of 80137745 is about 431.1340983780.

The spelling of 80137745 in words is "eighty million, one hundred thirty-seven thousand, seven hundred forty-five".