5451646620 has 192 divisors, whose sum is σ = 17836793856. Its totient is φ = 1218412800.

The previous prime is 5451646609. The next prime is 5451646633. The reversal of 5451646620 is 266461545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4248499 + ... + 4249781.

It is an arithmetic number, because the mean of its divisors is an integer number (92899968).

Almost surely, 2^5451646620 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 5451646620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8918396928).

5451646620 is an abundant number, since it is smaller than the sum of its proper divisors (12385147236).

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

5451646620 is a wasteful number, since it uses less digits than its factorization.

5451646620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 5451646620 is about 73835.2667767917. The cubic root of 5451646620 is about 1759.9860772831.

The spelling of 5451646620 in words is "five billion, four hundred fifty-one million, six hundred forty-six thousand, six hundred twenty".