61662324117 has 4 divisors (see below), whose sum is σ = 82216432160. Its totient is φ = 41108216076.

The previous prime is 61662324107. The next prime is 61662324151. The reversal of 61662324117 is 71142326616.

It is a happy number.

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 not a de Polignac number, because 61662324117 - 2⁸ = 61662323861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61662324107) 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, 10277054017 + ... + 10277054022.

It is an arithmetic number, because the mean of its divisors is an integer number (20554108040).

Almost surely, 2^61662324117 is an apocalyptic number.

It is an amenable number.

61662324117 is a deficient number, since it is larger than the sum of its proper divisors (20554108043).

61662324117 is a wasteful number, since it uses less digits than its factorization.

61662324117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20554108042.

The product of its digits is 72576, while the sum is 39.

The spelling of 61662324117 in words is "sixty-one billion, six hundred sixty-two million, three hundred twenty-four thousand, one hundred seventeen".