54721373478 has 32 divisors (see below), whose sum is σ = 109918892160. Its totient is φ = 18161270400.

The previous prime is 54721373471. The next prime is 54721373503. The reversal of 54721373478 is 87437312745.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54721373478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54721373471) 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, 1295293 + ... + 1336871.

It is an arithmetic number, because the mean of its divisors is an integer number (3434965380).

Almost surely, 2^54721373478 is an apocalyptic number.

54721373478 is an abundant number, since it is smaller than the sum of its proper divisors (55197518682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54721373478 is a wasteful number, since it uses less digits than its factorization.

54721373478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42532.

The product of its digits is 3951360, while the sum is 51.

The spelling of 54721373478 in words is "fifty-four billion, seven hundred twenty-one million, three hundred seventy-three thousand, four hundred seventy-eight".