102620808648 has 108 divisors (see below), whose sum is σ = 293476914315. Its totient is φ = 32390261856.

The previous prime is 102620808623. The next prime is 102620808757. The reversal of 102620808648 is 846808026201.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

102620808648 is a `hidden beast` number, since 10 + 2 + 620 + 8 + 0 + 8 + 6 + 4 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51310404324 + 51310404324 = 226518^2 + 226518^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=226518.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 51645111 + ... + 51647097.

Almost surely, 2^102620808648 is an apocalyptic number.

102620808648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102620808648

102620808648 is an abundant number, since it is smaller than the sum of its proper divisors (190856105667).

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

102620808648 is an equidigital number, since it uses as much as digits as its factorization.

102620808648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 102620808648 in words is "one hundred two billion, six hundred twenty million, eight hundred eight thousand, six hundred forty-eight".