78453186455 has 16 divisors (see below), whose sum is σ = 107598507840. Its totient is φ = 53793687552.

The previous prime is 78453186443. The next prime is 78453186499. The reversal of 78453186455 is 55468135487.

It is a cyclic number.

It is not a de Polignac number, because 78453186455 - 2¹⁶ = 78453120919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78453186455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 812087 + ... + 903543.

It is an arithmetic number, because the mean of its divisors is an integer number (6724906740).

Almost surely, 2^78453186455 is an apocalyptic number.

78453186455 is a deficient number, since it is larger than the sum of its proper divisors (29145321385).

78453186455 is a wasteful number, since it uses less digits than its factorization.

78453186455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115978.

The product of its digits is 16128000, while the sum is 56.

The spelling of 78453186455 in words is "seventy-eight billion, four hundred fifty-three million, one hundred eighty-six thousand, four hundred fifty-five".