61759299157 has 2 divisors, whose sum is σ = 61759299158. Its totient is φ = 61759299156.

The previous prime is 61759299089. The next prime is 61759299169. The reversal of 61759299157 is 75199295716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41795304721 + 19963994436 = 204439^2 + 141294^2 .

It is a cyclic number.

It is not a de Polignac number, because 61759299157 - 2¹¹ = 61759297109 is a prime.

It is a super-2 number, since 2×61759299157² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61759299095 and 61759299104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61759299187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30879649578 + 30879649579.

It is an arithmetic number, because the mean of its divisors is an integer number (30879649579).

Almost surely, 2^61759299157 is an apocalyptic number.

It is an amenable number.

61759299157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61759299157 is an equidigital number, since it uses as much as digits as its factorization.

61759299157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10716300, while the sum is 61.

The spelling of 61759299157 in words is "sixty-one billion, seven hundred fifty-nine million, two hundred ninety-nine thousand, one hundred fifty-seven".