85672940029 has 2 divisors, whose sum is σ = 85672940030. Its totient is φ = 85672940028.

The previous prime is 85672940027. The next prime is 85672940057. The reversal of 85672940029 is 92004927658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71393168025 + 14279772004 = 267195^2 + 119498^2 .

It is a cyclic number.

It is not a de Polignac number, because 85672940029 - 2¹ = 85672940027 is a prime.

Together with 85672940027, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85672940027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42836470014 + 42836470015.

It is an arithmetic number, because the mean of its divisors is an integer number (42836470015).

Almost surely, 2^85672940029 is an apocalyptic number.

It is an amenable number.

85672940029 is a deficient number, since it is larger than the sum of its proper divisors (1).

85672940029 is an equidigital number, since it uses as much as digits as its factorization.

85672940029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 85672940029 in words is "eighty-five billion, six hundred seventy-two million, nine hundred forty thousand, twenty-nine".