54070021720 has 64 divisors (see below), whose sum is σ = 142926366240. Its totient is φ = 18149376000.

The previous prime is 54070021699. The next prime is 54070021727. The reversal of 54070021720 is 2712007045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54070021727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4720681 + ... + 4732120.

Almost surely, 2^54070021720 is an apocalyptic number.

It is an amenable number.

54070021720 is an abundant number, since it is smaller than the sum of its proper divisors (88856344520).

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

54070021720 is a wasteful number, since it uses less digits than its factorization.

54070021720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452836 (or 9452832 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

Adding to 54070021720 its reverse (2712007045), we get a palindrome (56782028765).

The spelling of 54070021720 in words is "fifty-four billion, seventy million, twenty-one thousand, seven hundred twenty".