4521172992 has 224 divisors, whose sum is σ = 14136038784. Its totient is φ = 1258291200.

The previous prime is 4521172979. The next prime is 4521173011. The reversal of 4521172992 is 2992711254.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7052992 + ... + 7053632.

It is an arithmetic number, because the mean of its divisors is an integer number (63107316).

Almost surely, 2^4521172992 is an apocalyptic number.

4521172992 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4521172992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7068019392).

4521172992 is an abundant number, since it is smaller than the sum of its proper divisors (9614865792).

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

4521172992 is an equidigital number, since it uses as much as digits as its factorization.

4521172992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 694 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 4521172992 is about 67239.6682918647. The cubic root of 4521172992 is about 1653.5488954687.

The spelling of 4521172992 in words is "four billion, five hundred twenty-one million, one hundred seventy-two thousand, nine hundred ninety-two".