61137843079519 has 2 divisors, whose sum is σ = 61137843079520. Its totient is φ = 61137843079518.

The previous prime is 61137843079501. The next prime is 61137843079549. The reversal of 61137843079519 is 91597034873116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61137843079519 - 2¹⁵ = 61137843046751 is a prime.

It is a super-2 number, since 2×61137843079519² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61137843079549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30568921539759 + 30568921539760.

It is an arithmetic number, because the mean of its divisors is an integer number (30568921539760).

Almost surely, 2^{61137843079519} is an apocalyptic number.

61137843079519 is a deficient number, since it is larger than the sum of its proper divisors (1).

61137843079519 is an equidigital number, since it uses as much as digits as its factorization.

61137843079519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 61137843079519 in words is "sixty-one trillion, one hundred thirty-seven billion, eight hundred forty-three million, seventy-nine thousand, five hundred nineteen".