60610005991 has 2 divisors, whose sum is σ = 60610005992. Its totient is φ = 60610005990.

The previous prime is 60610005977. The next prime is 60610005997. The reversal of 60610005991 is 19950001606.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60610005991 - 2⁵ = 60610005959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60610005991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60610005997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30305002995 + 30305002996.

It is an arithmetic number, because the mean of its divisors is an integer number (30305002996).

Almost surely, 2^60610005991 is an apocalyptic number.

60610005991 is a deficient number, since it is larger than the sum of its proper divisors (1).

60610005991 is an equidigital number, since it uses as much as digits as its factorization.

60610005991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 37.

The spelling of 60610005991 in words is "sixty billion, six hundred ten million, five thousand, nine hundred ninety-one".