80551516537 has 2 divisors, whose sum is σ = 80551516538. Its totient is φ = 80551516536.

The previous prime is 80551516499. The next prime is 80551516541. The reversal of 80551516537 is 73561515508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67172198976 + 13379317561 = 259176^2 + 115669^2 .

It is a cyclic number.

It is not a de Polignac number, because 80551516537 - 2¹¹ = 80551514489 is a prime.

It is not a weakly prime, because it can be changed into another prime (80531516537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40275758268 + 40275758269.

It is an arithmetic number, because the mean of its divisors is an integer number (40275758269).

Almost surely, 2^80551516537 is an apocalyptic number.

It is an amenable number.

80551516537 is a deficient number, since it is larger than the sum of its proper divisors (1).

80551516537 is an equidigital number, since it uses as much as digits as its factorization.

80551516537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630000, while the sum is 46.

The spelling of 80551516537 in words is "eighty billion, five hundred fifty-one million, five hundred sixteen thousand, five hundred thirty-seven".