5501020673721 has 8 divisors (see below), whose sum is σ = 7335206380960. Its totient is φ = 3667091041152.

The previous prime is 5501020673719. The next prime is 5501020673789. The reversal of 5501020673721 is 1273760201055.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5501020673721 - 2¹ = 5501020673719 is a prime.

It is a super-2 number, since 2×5501020673721² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5501020673721.

It is not an unprimeable number, because it can be changed into a prime (5501020673791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63968536 + ... + 64054473.

It is an arithmetic number, because the mean of its divisors is an integer number (916900797620).

Almost surely, 2^{5501020673721} is an apocalyptic number.

It is an amenable number.

5501020673721 is a deficient number, since it is larger than the sum of its proper divisors (1834185707239).

5501020673721 is a wasteful number, since it uses less digits than its factorization.

5501020673721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128037335.

The product of its (nonzero) digits is 88200, while the sum is 39.

Adding to 5501020673721 its reverse (1273760201055), we get a palindrome (6774780874776).

The spelling of 5501020673721 in words is "five trillion, five hundred one billion, twenty million, six hundred seventy-three thousand, seven hundred twenty-one".