53542132778 has 4 divisors (see below), whose sum is σ = 80313199170. Its totient is φ = 26771066388.

The previous prime is 53542132769. The next prime is 53542132783. The reversal of 53542132778 is 87723124535.

53542132778 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: 87723124535 = 5 ⋅17544624907.

It can be written as a sum of positive squares in only one way, i.e., 28228368169 + 25313764609 = 168013^2 + 159103^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13385533193 + ... + 13385533196.

Almost surely, 2^53542132778 is an apocalyptic number.

53542132778 is a deficient number, since it is larger than the sum of its proper divisors (26771066392).

53542132778 is a wasteful number, since it uses less digits than its factorization.

53542132778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26771066391.

The product of its digits is 1411200, while the sum is 47.

The spelling of 53542132778 in words is "fifty-three billion, five hundred forty-two million, one hundred thirty-two thousand, seven hundred seventy-eight".