65611051650 has 48 divisors (see below), whose sum is σ = 180794901600. Its totient is φ = 17496280080.

The previous prime is 65611051633. The next prime is 65611051661. The reversal of 65611051650 is 5615011656.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 24299040 + ... + 24301739.

It is an arithmetic number, because the mean of its divisors is an integer number (3766560450).

Almost surely, 2^65611051650 is an apocalyptic number.

65611051650 is an abundant number, since it is smaller than the sum of its proper divisors (115183849950).

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

65611051650 is a wasteful number, since it uses less digits than its factorization.

65611051650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48600800 (or 48600789 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 65611051650 in words is "sixty-five billion, six hundred eleven million, fifty-one thousand, six hundred fifty".