80674066749 has 4 divisors (see below), whose sum is σ = 107565422336. Its totient is φ = 53782711164.

The previous prime is 80674066723. The next prime is 80674066757. The reversal of 80674066749 is 94766047608.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80674066749 - 2¹¹ = 80674064701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80674066769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13445677789 + ... + 13445677794.

It is an arithmetic number, because the mean of its divisors is an integer number (26891355584).

Almost surely, 2^80674066749 is an apocalyptic number.

It is an amenable number.

80674066749 is a deficient number, since it is larger than the sum of its proper divisors (26891355587).

80674066749 is a wasteful number, since it uses less digits than its factorization.

80674066749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891355586.

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 80674066749 in words is "eighty billion, six hundred seventy-four million, sixty-six thousand, seven hundred forty-nine".