54778538998 has 24 divisors (see below), whose sum is σ = 84670693632. Its totient is φ = 26578930464.

The previous prime is 54778538953. The next prime is 54778538999. The reversal of 54778538998 is 89983587745.

54778538998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 54778538998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54778538999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1022536 + ... + 1074772.

It is an arithmetic number, because the mean of its divisors is an integer number (3527945568).

Almost surely, 2^54778538998 is an apocalyptic number.

54778538998 is a deficient number, since it is larger than the sum of its proper divisors (29892154634).

54778538998 is a wasteful number, since it uses less digits than its factorization.

54778538998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52696 (or 52659 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 73.

The spelling of 54778538998 in words is "fifty-four billion, seven hundred seventy-eight million, five hundred thirty-eight thousand, nine hundred ninety-eight".