78235453287 has 8 divisors (see below), whose sum is σ = 115904375280. Its totient is φ = 52156968840.

The previous prime is 78235453271. The next prime is 78235453339.

78235453287 is a `hidden beast` number, since 7 + 8 + 2 + 354 + 5 + 3 + 287 = 666.

78235453287 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78235453287 - 2⁴ = 78235453271 is a prime.

It is a super-2 number, since 2×78235453287² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78235453237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448804664 + ... + 1448804717.

It is an arithmetic number, because the mean of its divisors is an integer number (14488046910).

Almost surely, 2^78235453287 is an apocalyptic number.

78235453287 is a deficient number, since it is larger than the sum of its proper divisors (37668921993).

78235453287 is a wasteful number, since it uses less digits than its factorization.

78235453287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897609390 (or 2897609384 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 78235453287 in words is "seventy-eight billion, two hundred thirty-five million, four hundred fifty-three thousand, two hundred eighty-seven".