61393226756690 has 8 divisors (see below), whose sum is σ = 110507808162060. Its totient is φ = 24557290702672.

The previous prime is 61393226756669. The next prime is 61393226756707. The reversal of 61393226756690 is 9665762239316.

It is a Cunningham number, because it is equal to 7835383²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 61393226756689 + 1 = 7835383^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×61393226756690² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069661337825 + ... + 3069661337844.

Almost surely, 2^{61393226756690} is an apocalyptic number.

61393226756690 is a deficient number, since it is larger than the sum of its proper divisors (49114581405370).

61393226756690 is a wasteful number, since it uses less digits than its factorization.

61393226756690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139322675676.

The product of its (nonzero) digits is 132269760, while the sum is 65.

The spelling of 61393226756690 in words is "sixty-one trillion, three hundred ninety-three billion, two hundred twenty-six million, seven hundred fifty-six thousand, six hundred ninety".