61393226756689 has 3 divisors (see below), whose sum is σ = 61393234592073. Its totient is φ = 61393218921306.

The previous prime is 61393226756669. The next prime is 61393226756707. The reversal of 61393226756689 is 98665762239316.

The square root of 61393226756689 is 7835383.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 61393226756689 - 2⁵ = 61393226756657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61393226756669) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3917692 + ... + 11753074.

It is an arithmetic number, because the mean of its divisors is an integer number (20464411530691).

Almost surely, 2^{61393226756689} is an apocalyptic number.

61393226756689 is the 7835383-rd square number.

61393226756689 is the 3917692-nd centered octagonal number.

It is an amenable number.

61393226756689 is a deficient number, since it is larger than the sum of its proper divisors (7835384).

61393226756689 is an frugal number, since it uses more digits than its factorization.

61393226756689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15670766 (or 7835383 counting only the distinct ones).

The product of its digits is 1058158080, while the sum is 73.

The spelling of 61393226756689 in words is "sixty-one trillion, three hundred ninety-three billion, two hundred twenty-six million, seven hundred fifty-six thousand, six hundred eighty-nine".