4621136544 has 144 divisors (see below), whose sum is σ = 13724212320. Its totient is φ = 1473077760.

The previous prime is 4621136543. The next prime is 4621136549. The reversal of 4621136544 is 4456311264.

4621136544 is a `hidden beast` number, since 46 + 211 + 365 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4621136499 and 4621136508.

It is not an unprimeable number, because it can be changed into a prime (4621136543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891079 + ... + 896249.

It is an arithmetic number, because the mean of its divisors is an integer number (95307030).

Almost surely, 2^4621136544 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 4621136544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6862106160).

4621136544 is an abundant number, since it is smaller than the sum of its proper divisors (9103075776).

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

4621136544 is a wasteful number, since it uses less digits than its factorization.

4621136544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323 (or 5312 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 4621136544 is about 67978.9419158610. The cubic root of 4621136544 is about 1665.6468725303.

The spelling of 4621136544 in words is "four billion, six hundred twenty-one million, one hundred thirty-six thousand, five hundred forty-four".