76721791459 has 2 divisors, whose sum is σ = 76721791460. Its totient is φ = 76721791458.

The previous prime is 76721791451. The next prime is 76721791511. The reversal of 76721791459 is 95419712767.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76721791459 - 2³ = 76721791451 is a prime.

It is not a weakly prime, because it can be changed into another prime (76721791451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38360895729 + 38360895730.

It is an arithmetic number, because the mean of its divisors is an integer number (38360895730).

Almost surely, 2^76721791459 is an apocalyptic number.

76721791459 is a deficient number, since it is larger than the sum of its proper divisors (1).

76721791459 is an equidigital number, since it uses as much as digits as its factorization.

76721791459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6667920, while the sum is 58.

The spelling of 76721791459 in words is "seventy-six billion, seven hundred twenty-one million, seven hundred ninety-one thousand, four hundred fifty-nine".