85808000101521 has 32 divisors (see below), whose sum is σ = 121640601513600. Its totient is φ = 53650922572800.

The previous prime is 85808000101403. The next prime is 85808000101531. The reversal of 85808000101521 is 12510100080858.

It is not a de Polignac number, because 85808000101521 - 2⁹ = 85808000101009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85808000101521.

It is not an unprimeable number, because it can be changed into a prime (85808000101531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43178665 + ... + 45122201.

It is an arithmetic number, because the mean of its divisors is an integer number (3801268797300).

Almost surely, 2^{85808000101521} is an apocalyptic number.

It is an amenable number.

85808000101521 is a deficient number, since it is larger than the sum of its proper divisors (35832601412079).

85808000101521 is a wasteful number, since it uses less digits than its factorization.

85808000101521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951329.

The product of its (nonzero) digits is 25600, while the sum is 39.

The spelling of 85808000101521 in words is "eighty-five trillion, eight hundred eight billion, one hundred one thousand, five hundred twenty-one".