61612175519 has 2 divisors, whose sum is σ = 61612175520. Its totient is φ = 61612175518.

The previous prime is 61612175509. The next prime is 61612175551. The reversal of 61612175519 is 91557121616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61612175519 - 2¹⁶ = 61612109983 is a prime.

It is a super-2 number, since 2×61612175519² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61612175519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61612175509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806087759 + 30806087760.

It is an arithmetic number, because the mean of its divisors is an integer number (30806087760).

Almost surely, 2^61612175519 is an apocalyptic number.

61612175519 is a deficient number, since it is larger than the sum of its proper divisors (1).

61612175519 is an equidigital number, since it uses as much as digits as its factorization.

61612175519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 44.

The spelling of 61612175519 in words is "sixty-one billion, six hundred twelve million, one hundred seventy-five thousand, five hundred nineteen".