43561878454 has 4 divisors (see below), whose sum is σ = 65342817684. Its totient is φ = 21780939226.

The previous prime is 43561878407. The next prime is 43561878473. The reversal of 43561878454 is 45487816534.

43561878454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 43561878395 and 43561878404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10890469612 + ... + 10890469615.

It is an arithmetic number, because the mean of its divisors is an integer number (16335704421).

Almost surely, 2^43561878454 is an apocalyptic number.

43561878454 is a deficient number, since it is larger than the sum of its proper divisors (21780939230).

43561878454 is a wasteful number, since it uses less digits than its factorization.

43561878454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21780939229.

The product of its digits is 12902400, while the sum is 55.

The spelling of 43561878454 in words is "forty-three billion, five hundred sixty-one million, eight hundred seventy-eight thousand, four hundred fifty-four".