103261505664 has 64 divisors (see below), whose sum is σ = 280124346240. Its totient is φ = 33688144896.

The previous prime is 103261505603. The next prime is 103261505687. The reversal of 103261505664 is 466505162301.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842699 + ... + 2878794.

It is an arithmetic number, because the mean of its divisors is an integer number (4376942910).

Almost surely, 2^103261505664 is an apocalyptic number.

It is an amenable number.

103261505664 is an abundant number, since it is smaller than the sum of its proper divisors (176862840576).

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

103261505664 is an equidigital number, since it uses as much as digits as its factorization.

103261505664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721557 (or 5721545 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 103261505664 its reverse (466505162301), we get a palindrome (569766667965).

The spelling of 103261505664 in words is "one hundred three billion, two hundred sixty-one million, five hundred five thousand, six hundred sixty-four".