65380621365 has 192 divisors, whose sum is σ = 130154169600. Its totient is φ = 31352832000.

The previous prime is 65380621363. The next prime is 65380621367. The reversal of 65380621365 is 56312608356.

It is an interprime number because it is at equal distance from previous prime (65380621363) and next prime (65380621367).

It is not a de Polignac number, because 65380621365 - 2¹ = 65380621363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65380621365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65380621363) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 40836565 + ... + 40838165.

It is an arithmetic number, because the mean of its divisors is an integer number (677886300).

Almost surely, 2^65380621365 is an apocalyptic number.

It is an amenable number.

65380621365 is a deficient number, since it is larger than the sum of its proper divisors (64773548235).

65380621365 is a wasteful number, since it uses less digits than its factorization.

65380621365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 65380621365 in words is "sixty-five billion, three hundred eighty million, six hundred twenty-one thousand, three hundred sixty-five".