5646555264 has 128 divisors (see below), whose sum is σ = 17694535680. Its totient is φ = 1561236480.

The previous prime is 5646555251. The next prime is 5646555281. The reversal of 5646555264 is 4625556465.

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

It is a super-2 number, since 2×5646555264² = 63767172698812219392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 49447 + ... + 117209.

It is an arithmetic number, because the mean of its divisors is an integer number (138238560).

Almost surely, 2^5646555264 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 5646555264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8847267840).

5646555264 is an abundant number, since it is smaller than the sum of its proper divisors (12047980416).

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

5646555264 is a wasteful number, since it uses less digits than its factorization.

5646555264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67818 (or 67806 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 48.

The square root of 5646555264 is about 75143.5643551728. The cubic root of 5646555264 is about 1780.7154536703.

The spelling of 5646555264 in words is "five billion, six hundred forty-six million, five hundred fifty-five thousand, two hundred sixty-four".