61130291879 has 2 divisors, whose sum is σ = 61130291880. Its totient is φ = 61130291878.

The previous prime is 61130291843. The next prime is 61130291899. The reversal of 61130291879 is 97819203116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61130291879 - 2²⁰ = 61129243303 is a prime.

It is a super-3 number, since 3×61130291879³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61130291809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30565145939 + 30565145940.

It is an arithmetic number, because the mean of its divisors is an integer number (30565145940).

Almost surely, 2^61130291879 is an apocalyptic number.

61130291879 is a deficient number, since it is larger than the sum of its proper divisors (1).

61130291879 is an equidigital number, since it uses as much as digits as its factorization.

61130291879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 61130291879 in words is "sixty-one billion, one hundred thirty million, two hundred ninety-one thousand, eight hundred seventy-nine".