4001551320 has 256 divisors, whose sum is σ = 13232419200. Its totient is φ = 962150400.

The previous prime is 4001551313. The next prime is 4001551363. The reversal of 4001551320 is 231551004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17173924 + ... + 17174156.

Almost surely, 2^4001551320 is an apocalyptic number.

4001551320 is a gapful number since it is divisible by the number (40) 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 4001551320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6616209600).

4001551320 is an abundant number, since it is smaller than the sum of its proper divisors (9230867880).

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

4001551320 is a wasteful number, since it uses less digits than its factorization.

4001551320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 4001551320 is about 63257.8162759354. The cubic root of 4001551320 is about 1587.6062393612.

The spelling of 4001551320 in words is "four billion, one million, five hundred fifty-one thousand, three hundred twenty".