61329055187 has 2 divisors, whose sum is σ = 61329055188. Its totient is φ = 61329055186.

The previous prime is 61329055129. The next prime is 61329055219. The reversal of 61329055187 is 78155092316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61329055187 - 2⁸ = 61329054931 is a prime.

It is a super-2 number, since 2×61329055187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61329051187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30664527593 + 30664527594.

It is an arithmetic number, because the mean of its divisors is an integer number (30664527594).

Almost surely, 2^61329055187 is an apocalyptic number.

61329055187 is a deficient number, since it is larger than the sum of its proper divisors (1).

61329055187 is an equidigital number, since it uses as much as digits as its factorization.

61329055187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 61329055187 in words is "sixty-one billion, three hundred twenty-nine million, fifty-five thousand, one hundred eighty-seven".