61189430123 has 2 divisors, whose sum is σ = 61189430124. Its totient is φ = 61189430122.

The previous prime is 61189430021. The next prime is 61189430177. The reversal of 61189430123 is 32103498116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61189430123 - 2⁸ = 61189429867 is a prime.

It is not a weakly prime, because it can be changed into another prime (61189430623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30594715061 + 30594715062.

It is an arithmetic number, because the mean of its divisors is an integer number (30594715062).

Almost surely, 2^61189430123 is an apocalyptic number.

61189430123 is a deficient number, since it is larger than the sum of its proper divisors (1).

61189430123 is an equidigital number, since it uses as much as digits as its factorization.

61189430123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 61189430123 in words is "sixty-one billion, one hundred eighty-nine million, four hundred thirty thousand, one hundred twenty-three".