553972721424 has 160 divisors (see below), whose sum is σ = 1523768972544. Its totient is φ = 172823592960.

The previous prime is 553972721413. The next prime is 553972721429. The reversal of 553972721424 is 424127279355.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (553972721429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202104694 + ... + 202107434.

Almost surely, 2^553972721424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553972721424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (761884486272).

553972721424 is an abundant number, since it is smaller than the sum of its proper divisors (969796251120).

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

553972721424 is a wasteful number, since it uses less digits than its factorization.

553972721424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065 (or 4059 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The spelling of 553972721424 in words is "five hundred fifty-three billion, nine hundred seventy-two million, seven hundred twenty-one thousand, four hundred twenty-four".