61522770117 has 4 divisors (see below), whose sum is σ = 82030360160. Its totient is φ = 41015180076.

The previous prime is 61522770103. The next prime is 61522770121. The reversal of 61522770117 is 71107722516.

It is a happy number.

61522770117 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 not a de Polignac number, because 61522770117 - 2¹⁰ = 61522769093 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 (61522770137) 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, 10253795017 + ... + 10253795022.

It is an arithmetic number, because the mean of its divisors is an integer number (20507590040).

Almost surely, 2^61522770117 is an apocalyptic number.

It is an amenable number.

61522770117 is a deficient number, since it is larger than the sum of its proper divisors (20507590043).

61522770117 is a wasteful number, since it uses less digits than its factorization.

61522770117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20507590042.

The product of its (nonzero) digits is 41160, while the sum is 39.

The spelling of 61522770117 in words is "sixty-one billion, five hundred twenty-two million, seven hundred seventy thousand, one hundred seventeen".