5451209344 has 128 divisors (see below), whose sum is σ = 12917606400. Its totient is φ = 2241921024.

The previous prime is 5451209317. The next prime is 5451209363. The reversal of 5451209344 is 4439021545.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×5451209344² = 59431366624225820672, which contains 22 as substring.

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, 5014369 + ... + 5015455.

It is an arithmetic number, because the mean of its divisors is an integer number (100918800).

Almost surely, 2^5451209344 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 5451209344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6458803200).

5451209344 is an abundant number, since it is smaller than the sum of its proper divisors (7466397056).

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

5451209344 is a wasteful number, since it uses less digits than its factorization.

5451209344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 5451209344 is about 73832.3055579331. The cubic root of 5451209344 is about 1759.9390199258.

The spelling of 5451209344 in words is "five billion, four hundred fifty-one million, two hundred nine thousand, three hundred forty-four".