78298389296 has 40 divisors (see below), whose sum is σ = 154608437760. Its totient is φ = 38402312256.

The previous prime is 78298389293. The next prime is 78298389307. The reversal of 78298389296 is 69298389287.

It is a super-2 number, since 2×78298389296² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78298389293) 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, 347501 + ... + 526643.

It is an arithmetic number, because the mean of its divisors is an integer number (3865210944).

Almost surely, 2^78298389296 is an apocalyptic number.

It is an amenable number.

78298389296 is a deficient number, since it is larger than the sum of its proper divisors (76310048464).

78298389296 is a wasteful number, since it uses less digits than its factorization.

78298389296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179673 (or 179667 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 71.

Subtracting from 78298389296 its reverse (69298389287), we obtain a palindrome (9000000009).

The spelling of 78298389296 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred eighty-nine thousand, two hundred ninety-six".