85558761251 has 2 divisors, whose sum is σ = 85558761252. Its totient is φ = 85558761250.

The previous prime is 85558761247. The next prime is 85558761257. The reversal of 85558761251 is 15216785558.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85558761251 - 2² = 85558761247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85558761193 and 85558761202.

It is not a weakly prime, because it can be changed into another prime (85558761257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42779380625 + 42779380626.

It is an arithmetic number, because the mean of its divisors is an integer number (42779380626).

Almost surely, 2^85558761251 is an apocalyptic number.

85558761251 is a deficient number, since it is larger than the sum of its proper divisors (1).

85558761251 is an equidigital number, since it uses as much as digits as its factorization.

85558761251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360000, while the sum is 53.

The spelling of 85558761251 in words is "eighty-five billion, five hundred fifty-eight million, seven hundred sixty-one thousand, two hundred fifty-one".