85621635007 has 2 divisors, whose sum is σ = 85621635008. Its totient is φ = 85621635006.

The previous prime is 85621634993. The next prime is 85621635023. The reversal of 85621635007 is 70053612658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85621635007 - 2²³ = 85613246399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85621638007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42810817503 + 42810817504.

It is an arithmetic number, because the mean of its divisors is an integer number (42810817504).

Almost surely, 2^85621635007 is an apocalyptic number.

85621635007 is a deficient number, since it is larger than the sum of its proper divisors (1).

85621635007 is an equidigital number, since it uses as much as digits as its factorization.

85621635007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 85621635007 in words is "eighty-five billion, six hundred twenty-one million, six hundred thirty-five thousand, seven".