56671450018 has 4 divisors (see below), whose sum is σ = 85007175030. Its totient is φ = 28335725008.

The previous prime is 56671450013. The next prime is 56671450067. The reversal of 56671450018 is 81005417665.

56671450018 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 can be written as a sum of positive squares in only one way, i.e., 38112019729 + 18559430289 = 195223^2 + 136233^2 .

It is not an unprimeable number, because it can be changed into a prime (56671450013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14167862503 + ... + 14167862506.

Almost surely, 2^56671450018 is an apocalyptic number.

56671450018 is a deficient number, since it is larger than the sum of its proper divisors (28335725012).

56671450018 is a wasteful number, since it uses less digits than its factorization.

56671450018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28335725011.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 56671450018 in words is "fifty-six billion, six hundred seventy-one million, four hundred fifty thousand, eighteen".