60721796428991 has 2 divisors, whose sum is σ = 60721796428992. Its totient is φ = 60721796428990.

The previous prime is 60721796428967. The next prime is 60721796429071. The reversal of 60721796428991 is 19982469712706.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 60721796428991 - 2²² = 60721792234687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60721796428591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30360898214495 + 30360898214496.

It is an arithmetic number, because the mean of its divisors is an integer number (30360898214496).

Almost surely, 2^{60721796428991} is an apocalyptic number.

60721796428991 is a deficient number, since it is larger than the sum of its proper divisors (1).

60721796428991 is an equidigital number, since it uses as much as digits as its factorization.

60721796428991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164602368, while the sum is 71.

The spelling of 60721796428991 in words is "sixty trillion, seven hundred twenty-one billion, seven hundred ninety-six million, four hundred twenty-eight thousand, nine hundred ninety-one".