78365313589 has 8 divisors (see below), whose sum is σ = 78573892320. Its totient is φ = 78156791856.

The previous prime is 78365313583. The next prime is 78365313643. The reversal of 78365313589 is 98531356387.

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 78365313589 - 2¹³ = 78365305397 is a prime.

It is a super-2 number, since 2×78365313589² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78365313583) 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, 5494902 + ... + 5509144.

It is an arithmetic number, because the mean of its divisors is an integer number (9821736540).

Almost surely, 2^78365313589 is an apocalyptic number.

It is an amenable number.

78365313589 is a deficient number, since it is larger than the sum of its proper divisors (208578731).

78365313589 is a wasteful number, since it uses less digits than its factorization.

78365313589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28499.

The product of its digits is 16329600, while the sum is 58.

The spelling of 78365313589 in words is "seventy-eight billion, three hundred sixty-five million, three hundred thirteen thousand, five hundred eighty-nine".