60646783991 has 2 divisors, whose sum is σ = 60646783992. Its totient is φ = 60646783990.

The previous prime is 60646783963. The next prime is 60646783997. The reversal of 60646783991 is 19938764606.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60646783991 - 2¹⁰ = 60646782967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60646783991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60646783997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30323391995 + 30323391996.

It is an arithmetic number, because the mean of its divisors is an integer number (30323391996).

Almost surely, 2^60646783991 is an apocalyptic number.

60646783991 is a deficient number, since it is larger than the sum of its proper divisors (1).

60646783991 is an equidigital number, since it uses as much as digits as its factorization.

60646783991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 60646783991 in words is "sixty billion, six hundred forty-six million, seven hundred eighty-three thousand, nine hundred ninety-one".