4001651544 has 64 divisors (see below), whose sum is σ = 10969136640. Its totient is φ = 1206450560.

The previous prime is 4001651513. The next prime is 4001651551. The reversal of 4001651544 is 4451561004.

4001651544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 13537 + ... + 90479.

It is an arithmetic number, because the mean of its divisors is an integer number (171392760).

Almost surely, 2^4001651544 is an apocalyptic number.

4001651544 is a gapful number since it is divisible by the number (44) 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 4001651544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5484568320).

4001651544 is an abundant number, since it is smaller than the sum of its proper divisors (6967485096).

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

4001651544 is a wasteful number, since it uses less digits than its factorization.

4001651544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77160 (or 77156 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 4001651544 is about 63258.6084576637. The cubic root of 4001651544 is about 1587.6194937973.

The spelling of 4001651544 in words is "four billion, one million, six hundred fifty-one thousand, five hundred forty-four".