102820450876 has 24 divisors (see below), whose sum is σ = 211393095984. Its totient is φ = 43141447680.

The previous prime is 102820450853. The next prime is 102820450877. The reversal of 102820450876 is 678054028201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102820450877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89877445 + ... + 89878588.

It is an arithmetic number, because the mean of its divisors is an integer number (8808045666).

Almost surely, 2^102820450876 is an apocalyptic number.

It is an amenable number.

102820450876 is an abundant number, since it is smaller than the sum of its proper divisors (108572645108).

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

102820450876 is a wasteful number, since it uses less digits than its factorization.

102820450876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179756061 (or 179756059 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 102820450876 in words is "one hundred two billion, eight hundred twenty million, four hundred fifty thousand, eight hundred seventy-six".