610150016661 has 4 divisors (see below), whose sum is σ = 813533355552. Its totient is φ = 406766677772.

The previous prime is 610150016659. The next prime is 610150016677. The reversal of 610150016661 is 166610051016.

610150016661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 610150016661 - 2¹ = 610150016659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610150016261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101691669441 + ... + 101691669446.

It is an arithmetic number, because the mean of its divisors is an integer number (203383338888).

Almost surely, 2^610150016661 is an apocalyptic number.

It is an amenable number.

610150016661 is a deficient number, since it is larger than the sum of its proper divisors (203383338891).

610150016661 is a wasteful number, since it uses less digits than its factorization.

610150016661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203383338890.

The product of its (nonzero) digits is 6480, while the sum is 33.

Adding to 610150016661 its reverse (166610051016), we get a palindrome (776760067677).

The spelling of 610150016661 in words is "six hundred ten billion, one hundred fifty million, sixteen thousand, six hundred sixty-one".