78452134454 has 32 divisors (see below), whose sum is σ = 121122340416. Its totient is φ = 38087470080.

The previous prime is 78452134421. The next prime is 78452134543. The reversal of 78452134454 is 45443125487.

It is a junction number, because it is equal to n+sod(n) for n = 78452134399 and 78452134408.

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, 29458727 + ... + 29461389.

It is an arithmetic number, because the mean of its divisors is an integer number (3785073138).

Almost surely, 2^78452134454 is an apocalyptic number.

78452134454 is a deficient number, since it is larger than the sum of its proper divisors (42670205962).

78452134454 is a wasteful number, since it uses less digits than its factorization.

78452134454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280.

The product of its digits is 2150400, while the sum is 47.

The spelling of 78452134454 in words is "seventy-eight billion, four hundred fifty-two million, one hundred thirty-four thousand, four hundred fifty-four".