54721705040 has 40 divisors (see below), whose sum is σ = 129019920768. Its totient is φ = 21580388480.

The previous prime is 54721705039. The next prime is 54721705057. The reversal of 54721705040 is 4050712745.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×54721705040² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4811372 + ... + 4822731.

Almost surely, 2^54721705040 is an apocalyptic number.

It is an amenable number.

54721705040 is an abundant number, since it is smaller than the sum of its proper divisors (74298215728).

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

54721705040 is a wasteful number, since it uses less digits than its factorization.

54721705040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634187 (or 9634181 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 54721705040 in words is "fifty-four billion, seven hundred twenty-one million, seven hundred five thousand, forty".