54043172738 has 4 divisors (see below), whose sum is σ = 81064759110. Its totient is φ = 27021586368.

The previous prime is 54043172731. The next prime is 54043172779. The reversal of 54043172738 is 83727134045.

54043172738 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, and also an emirpimes, since its reverse is a distinct semiprime: 83727134045 = 5 ⋅16745426809.

It can be written as a sum of positive squares in only one way, i.e., 44077742809 + 9965429929 = 209947^2 + 99827^2 .

It is not an unprimeable number, because it can be changed into a prime (54043172731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510793183 + ... + 13510793186.

Almost surely, 2^54043172738 is an apocalyptic number.

54043172738 is a deficient number, since it is larger than the sum of its proper divisors (27021586372).

54043172738 is a wasteful number, since it uses less digits than its factorization.

54043172738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27021586371.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 54043172738 in words is "fifty-four billion, forty-three million, one hundred seventy-two thousand, seven hundred thirty-eight".