78275819361 has 8 divisors (see below), whose sum is σ = 107734461184. Its totient is φ = 50500528560.

The previous prime is 78275819351. The next prime is 78275819387. The reversal of 78275819361 is 16391857287.

It is a happy number.

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

It is not a de Polignac number, because 78275819361 - 2⁵ = 78275819329 is a prime.

It is a super-2 number, since 2×78275819361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78275819341) 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, 420837646 + ... + 420837831.

It is an arithmetic number, because the mean of its divisors is an integer number (13466807648).

Almost surely, 2^78275819361 is an apocalyptic number.

It is an amenable number.

78275819361 is a deficient number, since it is larger than the sum of its proper divisors (29458641823).

78275819361 is a wasteful number, since it uses less digits than its factorization.

78275819361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841675511.

The product of its digits is 5080320, while the sum is 57.

The spelling of 78275819361 in words is "seventy-eight billion, two hundred seventy-five million, eight hundred nineteen thousand, three hundred sixty-one".