102643210828 has 6 divisors (see below), whose sum is σ = 179625618956. Its totient is φ = 51321605412.

The previous prime is 102643210823. The next prime is 102643210837. The reversal of 102643210828 is 828012346201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102643210823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12830401350 + ... + 12830401357.

Almost surely, 2^102643210828 is an apocalyptic number.

It is an amenable number.

102643210828 is a deficient number, since it is larger than the sum of its proper divisors (76982408128).

102643210828 is a wasteful number, since it uses less digits than its factorization.

102643210828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25660802711 (or 25660802709 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 102643210828 in words is "one hundred two billion, six hundred forty-three million, two hundred ten thousand, eight hundred twenty-eight".