61158193337 has 2 divisors, whose sum is σ = 61158193338. Its totient is φ = 61158193336.

The previous prime is 61158193319. The next prime is 61158193363. The reversal of 61158193337 is 73339185116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61018386361 + 139806976 = 247019^2 + 11824^2 .

It is a cyclic number.

It is not a de Polignac number, because 61158193337 - 2⁸ = 61158193081 is a prime.

It is a super-2 number, since 2×61158193337² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61158193291 and 61158193300.

It is not a weakly prime, because it can be changed into another prime (61158193307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30579096668 + 30579096669.

It is an arithmetic number, because the mean of its divisors is an integer number (30579096669).

Almost surely, 2^61158193337 is an apocalyptic number.

It is an amenable number.

61158193337 is a deficient number, since it is larger than the sum of its proper divisors (1).

61158193337 is an equidigital number, since it uses as much as digits as its factorization.

61158193337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The spelling of 61158193337 in words is "sixty-one billion, one hundred fifty-eight million, one hundred ninety-three thousand, three hundred thirty-seven".