61051065593 has 4 divisors (see below), whose sum is σ = 69772646400. Its totient is φ = 52329484788.

The previous prime is 61051065577. The next prime is 61051065629. The reversal of 61051065593 is 39556015016.

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 61051065593 - 2⁴ = 61051065577 is a prime.

It is a super-2 number, since 2×61051065593² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61051065593.

It is not an unprimeable number, because it can be changed into a prime (61051065893) 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, 4360790393 + ... + 4360790406.

It is an arithmetic number, because the mean of its divisors is an integer number (17443161600).

Almost surely, 2^61051065593 is an apocalyptic number.

It is an amenable number.

61051065593 is a deficient number, since it is larger than the sum of its proper divisors (8721580807).

61051065593 is an equidigital number, since it uses as much as digits as its factorization.

61051065593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8721580806.

The product of its (nonzero) digits is 121500, while the sum is 41.

The spelling of 61051065593 in words is "sixty-one billion, fifty-one million, sixty-five thousand, five hundred ninety-three".