85745229851 has 2 divisors, whose sum is σ = 85745229852. Its totient is φ = 85745229850.

The previous prime is 85745229841. The next prime is 85745229953. The reversal of 85745229851 is 15892254758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85745229851 - 2²⁶ = 85678120987 is a prime.

It is not a weakly prime, because it can be changed into another prime (85745229821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42872614925 + 42872614926.

It is an arithmetic number, because the mean of its divisors is an integer number (42872614926).

Almost surely, 2^85745229851 is an apocalyptic number.

85745229851 is a deficient number, since it is larger than the sum of its proper divisors (1).

85745229851 is an equidigital number, since it uses as much as digits as its factorization.

85745229851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064000, while the sum is 56.

The spelling of 85745229851 in words is "eighty-five billion, seven hundred forty-five million, two hundred twenty-nine thousand, eight hundred fifty-one".