56154738478 has 4 divisors (see below), whose sum is σ = 84232107720. Its totient is φ = 28077369238.

The previous prime is 56154738467. The next prime is 56154738481. The reversal of 56154738478 is 87483745165.

56154738478 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 Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 14038684618 + ... + 14038684621.

It is an arithmetic number, because the mean of its divisors is an integer number (21058026930).

Almost surely, 2^56154738478 is an apocalyptic number.

56154738478 is a deficient number, since it is larger than the sum of its proper divisors (28077369242).

56154738478 is a wasteful number, since it uses less digits than its factorization.

56154738478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28077369241.

The product of its digits is 22579200, while the sum is 58.

The spelling of 56154738478 in words is "fifty-six billion, one hundred fifty-four million, seven hundred thirty-eight thousand, four hundred seventy-eight".