78298361123 has 4 divisors (see below), whose sum is σ = 80998304640. Its totient is φ = 75598417608.

The previous prime is 78298361107. The next prime is 78298361171. The reversal of 78298361123 is 32116389287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78298361123 - 2⁴ = 78298361107 is a prime.

It is a super-2 number, since 2×78298361123² (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 (78298361173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349971715 + ... + 1349971772.

It is an arithmetic number, because the mean of its divisors is an integer number (20249576160).

Almost surely, 2^78298361123 is an apocalyptic number.

78298361123 is a deficient number, since it is larger than the sum of its proper divisors (2699943517).

78298361123 is a wasteful number, since it uses less digits than its factorization.

78298361123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699943516.

The product of its digits is 870912, while the sum is 50.

The spelling of 78298361123 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred sixty-one thousand, one hundred twenty-three".