78334511530 has 32 divisors (see below), whose sum is σ = 153902851200. Its totient is φ = 28470025920.

The previous prime is 78334511467. The next prime is 78334511533. The reversal of 78334511530 is 3511543387.

It is a happy number.

It is a super-2 number, since 2×78334511530² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78334511533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16771 + ... + 396169.

It is an arithmetic number, because the mean of its divisors is an integer number (4809464100).

Almost surely, 2^78334511530 is an apocalyptic number.

78334511530 is a deficient number, since it is larger than the sum of its proper divisors (75568339670).

78334511530 is a wasteful number, since it uses less digits than its factorization.

78334511530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381294.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 78334511530 in words is "seventy-eight billion, three hundred thirty-four million, five hundred eleven thousand, five hundred thirty".