101285985995 has 4 divisors (see below), whose sum is σ = 121543183200. Its totient is φ = 81028788792.

The previous prime is 101285985991. The next prime is 101285986019. The reversal of 101285985995 is 599589582101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101285985995 - 2² = 101285985991 is a prime.

It is a super-2 number, since 2×101285985995² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101285985991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10128598595 + ... + 10128598604.

It is an arithmetic number, because the mean of its divisors is an integer number (30385795800).

Almost surely, 2^101285985995 is an apocalyptic number.

101285985995 is a deficient number, since it is larger than the sum of its proper divisors (20257197205).

101285985995 is an equidigital number, since it uses as much as digits as its factorization.

101285985995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20257197204.

The product of its (nonzero) digits is 11664000, while the sum is 62.

The spelling of 101285985995 in words is "one hundred one billion, two hundred eighty-five million, nine hundred eighty-five thousand, nine hundred ninety-five".