53944616553 has 16 divisors (see below), whose sum is σ = 76650264576. Its totient is φ = 33667560080.

The previous prime is 53944616497. The next prime is 53944616591. The reversal of 53944616553 is 35561644935.

53944616553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53944616553 - 2¹⁴ = 53944600169 is a prime.

It is a super-4 number, since 4×53944616553⁴ (a number of 44 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53944616496 and 53944616505.

It is not an unprimeable number, because it can be changed into a prime (53944656553) 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, 8313843 + ... + 8320328.

It is an arithmetic number, because the mean of its divisors is an integer number (4790641536).

Almost surely, 2^53944616553 is an apocalyptic number.

It is an amenable number.

53944616553 is a deficient number, since it is larger than the sum of its proper divisors (22705648023).

53944616553 is a wasteful number, since it uses less digits than its factorization.

53944616553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16634244.

The product of its digits is 5832000, while the sum is 51.

The spelling of 53944616553 in words is "fifty-three billion, nine hundred forty-four million, six hundred sixteen thousand, five hundred fifty-three".