61002436123 has 2 divisors, whose sum is σ = 61002436124. Its totient is φ = 61002436122.

The previous prime is 61002436109. The next prime is 61002436141. The reversal of 61002436123 is 32163420016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61002436123 - 2¹³ = 61002427931 is a prime.

It is a super-2 number, since 2×61002436123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61002436091 and 61002436100.

It is not a weakly prime, because it can be changed into another prime (61002436153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30501218061 + 30501218062.

It is an arithmetic number, because the mean of its divisors is an integer number (30501218062).

Almost surely, 2^61002436123 is an apocalyptic number.

61002436123 is a deficient number, since it is larger than the sum of its proper divisors (1).

61002436123 is an equidigital number, since it uses as much as digits as its factorization.

61002436123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 61002436123 its reverse (32163420016), we get a palindrome (93165856139).

The spelling of 61002436123 in words is "sixty-one billion, two million, four hundred thirty-six thousand, one hundred twenty-three".