61131044419 has 2 divisors, whose sum is σ = 61131044420. Its totient is φ = 61131044418.

The previous prime is 61131044399. The next prime is 61131044453. The reversal of 61131044419 is 91444013116.

It is an a-pointer prime, because the next prime (61131044453) can be obtained adding 61131044419 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61131044419 - 2⁷ = 61131044291 is a prime.

It is a super-2 number, since 2×61131044419² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61131044119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30565522209 + 30565522210.

It is an arithmetic number, because the mean of its divisors is an integer number (30565522210).

Almost surely, 2^61131044419 is an apocalyptic number.

61131044419 is a deficient number, since it is larger than the sum of its proper divisors (1).

61131044419 is an equidigital number, since it uses as much as digits as its factorization.

61131044419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 61131044419 in words is "sixty-one billion, one hundred thirty-one million, forty-four thousand, four hundred nineteen".