78468384453525 has 72 divisors (see below), whose sum is σ = 153466980207840. Its totient is φ = 38009418096000.

The previous prime is 78468384453523. The next prime is 78468384453623. The reversal of 78468384453525 is 52535448386487.

78468384453525 is a `hidden beast` number, since 7 + 8 + 4 + 6 + 8 + 3 + 8 + 44 + 53 + 525 = 666.

It is not a de Polignac number, because 78468384453525 - 2¹ = 78468384453523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78468384453521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12314835 + ... + 17566784.

It is an arithmetic number, because the mean of its divisors is an integer number (2131485836220).

Almost surely, 2^{78468384453525} is an apocalyptic number.

78468384453525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78468384453525 is a deficient number, since it is larger than the sum of its proper divisors (74998595754315).

78468384453525 is a wasteful number, since it uses less digits than its factorization.

78468384453525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29882707 (or 29882699 counting only the distinct ones).

The product of its digits is 3096576000, while the sum is 72.

The spelling of 78468384453525 in words is "seventy-eight trillion, four hundred sixty-eight billion, three hundred eighty-four million, four hundred fifty-three thousand, five hundred twenty-five".