65407775389 has 8 divisors (see below), whose sum is σ = 71500459968. Its totient is φ = 59339511360.

The previous prime is 65407775387. The next prime is 65407775413. The reversal of 65407775389 is 98357770456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65407775389 - 2¹ = 65407775387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65407775387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6099532 + ... + 6110245.

It is an arithmetic number, because the mean of its divisors is an integer number (8937557496).

Almost surely, 2^65407775389 is an apocalyptic number.

It is an amenable number.

65407775389 is a deficient number, since it is larger than the sum of its proper divisors (6092684579).

65407775389 is a wasteful number, since it uses less digits than its factorization.

65407775389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12210275.

The product of its (nonzero) digits is 44452800, while the sum is 61.

The spelling of 65407775389 in words is "sixty-five billion, four hundred seven million, seven hundred seventy-five thousand, three hundred eighty-nine".