61041889123 has 2 divisors, whose sum is σ = 61041889124. Its totient is φ = 61041889122.

The previous prime is 61041889109. The next prime is 61041889157. The reversal of 61041889123 is 32198814016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61041889123 - 2⁵ = 61041889091 is a prime.

It is a super-2 number, since 2×61041889123² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61041889123.

It is not a weakly prime, because it can be changed into another prime (61041889423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30520944561 + 30520944562.

It is an arithmetic number, because the mean of its divisors is an integer number (30520944562).

Almost surely, 2^61041889123 is an apocalyptic number.

61041889123 is a deficient number, since it is larger than the sum of its proper divisors (1).

61041889123 is an equidigital number, since it uses as much as digits as its factorization.

61041889123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 61041889123 in words is "sixty-one billion, forty-one million, eight hundred eighty-nine thousand, one hundred twenty-three".