61126562171 has 4 divisors (see below), whose sum is σ = 61131700872. Its totient is φ = 61121423472.

The previous prime is 61126562141. The next prime is 61126562179. The reversal of 61126562171 is 17126562116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61126562171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61126562179) 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, 2551466 + ... + 2575311.

It is an arithmetic number, because the mean of its divisors is an integer number (15282925218).

Almost surely, 2^61126562171 is an apocalyptic number.

61126562171 is a deficient number, since it is larger than the sum of its proper divisors (5138701).

61126562171 is a wasteful number, since it uses less digits than its factorization.

61126562171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138700.

The product of its digits is 30240, while the sum is 38.

The spelling of 61126562171 in words is "sixty-one billion, one hundred twenty-six million, five hundred sixty-two thousand, one hundred seventy-one".