661556050665062 has 16 divisors (see below), whose sum is σ = 1138801879751712. Its totient is φ = 282347573489280.

The previous prime is 661556050665049. The next prime is 661556050665067. The reversal of 661556050665062 is 260566050655166.

661556050665062 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 661556050664992 and 661556050665010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661556050665067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98037348533 + ... + 98037355280.

It is an arithmetic number, because the mean of its divisors is an integer number (71175117484482).

Almost surely, 2^{661556050665062} is an apocalyptic number.

661556050665062 is a deficient number, since it is larger than the sum of its proper divisors (477245829086650).

661556050665062 is a wasteful number, since it uses less digits than its factorization.

661556050665062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196074704063.

The product of its (nonzero) digits is 58320000, while the sum is 59.

The spelling of 661556050665062 in words is "six hundred sixty-one trillion, five hundred fifty-six billion, fifty million, six hundred sixty-five thousand, sixty-two".