4001564655 has 48 divisors (see below), whose sum is σ = 7612061184. Its totient is φ = 1928495040.

The previous prime is 4001564647. The next prime is 4001564657. The reversal of 4001564655 is 5564651004.

4001564655 is a `hidden beast` number, since 4 + 0 + 0 + 1 + 5 + 646 + 5 + 5 = 666.

It is not a de Polignac number, because 4001564655 - 2³ = 4001564647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001564657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58462 + ... + 106868.

It is an arithmetic number, because the mean of its divisors is an integer number (158584608).

Almost surely, 2^4001564655 is an apocalyptic number.

4001564655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4001564655 is a deficient number, since it is larger than the sum of its proper divisors (3610496529).

4001564655 is a wasteful number, since it uses less digits than its factorization.

4001564655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48596 (or 48593 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 4001564655 is about 63257.9216778421. The cubic root of 4001564655 is about 1587.6080029027.

The spelling of 4001564655 in words is "four billion, one million, five hundred sixty-four thousand, six hundred fifty-five".