102206195808 has 48 divisors (see below), whose sum is σ = 270339322176. Its totient is φ = 33808661120.

The previous prime is 102206195801. The next prime is 102206195831. The reversal of 102206195808 is 808591602201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×102206195808² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102206195808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102206195801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4050966 + ... + 4076117.

It is an arithmetic number, because the mean of its divisors is an integer number (5632069212).

Almost surely, 2^102206195808 is an apocalyptic number.

It is an amenable number.

102206195808 is an abundant number, since it is smaller than the sum of its proper divisors (168133126368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102206195808 is a wasteful number, since it uses less digits than its factorization.

102206195808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127227 (or 8127219 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 102206195808 in words is "one hundred two billion, two hundred six million, one hundred ninety-five thousand, eight hundred eight".