4001551044 has 24 divisors (see below), whose sum is σ = 9347623488. Its totient is φ = 1332325920.

The previous prime is 4001551033. The next prime is 4001551091. The reversal of 4001551044 is 4401551004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179592 + ... + 200639.

It is an arithmetic number, because the mean of its divisors is an integer number (389484312).

Almost surely, 2^4001551044 is an apocalyptic number.

It is an amenable number.

4001551044 is an abundant number, since it is smaller than the sum of its proper divisors (5346072444).

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

4001551044 is a wasteful number, since it uses less digits than its factorization.

4001551044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381115 (or 381113 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 4001551044 is about 63257.8140943868. The cubic root of 4001551044 is about 1587.6062028604.

The spelling of 4001551044 in words is "four billion, one million, five hundred fifty-one thousand, forty-four".