80961831523 has 2 divisors, whose sum is σ = 80961831524. Its totient is φ = 80961831522.

The previous prime is 80961831491. The next prime is 80961831617. The reversal of 80961831523 is 32513816908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80961831523 - 2⁵ = 80961831491 is a prime.

It is not a weakly prime, because it can be changed into another prime (80961831823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40480915761 + 40480915762.

It is an arithmetic number, because the mean of its divisors is an integer number (40480915762).

Almost surely, 2^80961831523 is an apocalyptic number.

80961831523 is a deficient number, since it is larger than the sum of its proper divisors (1).

80961831523 is an equidigital number, since it uses as much as digits as its factorization.

80961831523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 80961831523 in words is "eighty billion, nine hundred sixty-one million, eight hundred thirty-one thousand, five hundred twenty-three".