80278726847 has 16 divisors (see below), whose sum is σ = 87750690720. Its totient is φ = 72835891200.

The previous prime is 80278726841. The next prime is 80278726903. The reversal of 80278726847 is 74862787208.

It is a cyclic number.

It is not a de Polignac number, because 80278726847 - 2²⁴ = 80261949631 is a prime.

It is a super-2 number, since 2×80278726847² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80278726841) 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, 18785303 + ... + 18789575.

It is an arithmetic number, because the mean of its divisors is an integer number (5484418170).

Almost surely, 2^80278726847 is an apocalyptic number.

80278726847 is a deficient number, since it is larger than the sum of its proper divisors (7471963873).

80278726847 is a wasteful number, since it uses less digits than its factorization.

80278726847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274.

The product of its (nonzero) digits is 16859136, while the sum is 59.

The spelling of 80278726847 in words is "eighty billion, two hundred seventy-eight million, seven hundred twenty-six thousand, eight hundred forty-seven".