53919444778 has 32 divisors (see below), whose sum is σ = 85380065280. Its totient is φ = 25488503040.

The previous prime is 53919444773. The next prime is 53919444779. The reversal of 53919444778 is 87744491935.

It is not an unprimeable number, because it can be changed into a prime (53919444773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1359858 + ... + 1398946.

It is an arithmetic number, because the mean of its divisors is an integer number (2668127040).

Almost surely, 2^53919444778 is an apocalyptic number.

53919444778 is a deficient number, since it is larger than the sum of its proper divisors (31460620502).

53919444778 is a wasteful number, since it uses less digits than its factorization.

53919444778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39462.

The product of its digits is 30481920, while the sum is 61.

The spelling of 53919444778 in words is "fifty-three billion, nine hundred nineteen million, four hundred forty-four thousand, seven hundred seventy-eight".