65381867749001 has 2 divisors, whose sum is σ = 65381867749002. Its totient is φ = 65381867749000.

The previous prime is 65381867748949. The next prime is 65381867749031. The reversal of 65381867749001 is 10094776818356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59321974709776 + 6059893039225 = 7702076^2 + 2461685^2 .

It is a cyclic number.

It is not a de Polignac number, because 65381867749001 - 2²² = 65381863554697 is a prime.

It is not a weakly prime, because it can be changed into another prime (65381867749031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32690933874500 + 32690933874501.

It is an arithmetic number, because the mean of its divisors is an integer number (32690933874501).

Almost surely, 2^{65381867749001} is an apocalyptic number.

It is an amenable number.

65381867749001 is a deficient number, since it is larger than the sum of its proper divisors (1).

65381867749001 is an equidigital number, since it uses as much as digits as its factorization.

65381867749001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 65381867749001 in words is "sixty-five trillion, three hundred eighty-one billion, eight hundred sixty-seven million, seven hundred forty-nine thousand, one".