61319112593 has 4 divisors (see below), whose sum is σ = 61319916528. Its totient is φ = 61318308660.

The previous prime is 61319112563. The next prime is 61319112643. The reversal of 61319112593 is 39521191316.

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 a cyclic number.

It is not a de Polignac number, because 61319112593 - 2⁶ = 61319112529 is a prime.

It is a super-2 number, since 2×61319112593² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61319112593.

It is not an unprimeable number, because it can be changed into a prime (61319112563) 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, 273971 + ... + 444632.

It is an arithmetic number, because the mean of its divisors is an integer number (15329979132).

Almost surely, 2^61319112593 is an apocalyptic number.

It is an amenable number.

61319112593 is a deficient number, since it is larger than the sum of its proper divisors (803935).

61319112593 is an equidigital number, since it uses as much as digits as its factorization.

61319112593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803934.

The product of its digits is 43740, while the sum is 41.

The spelling of 61319112593 in words is "sixty-one billion, three hundred nineteen million, one hundred twelve thousand, five hundred ninety-three".