4021567266 has 16 divisors (see below), whose sum is σ = 8085247488. Its totient is φ = 1333503600.

The previous prime is 4021567237. The next prime is 4021567271. The reversal of 4021567266 is 6627651204.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1753465 + ... + 1755756.

It is an arithmetic number, because the mean of its divisors is an integer number (505327968).

Almost surely, 2^4021567266 is an apocalyptic number.

4021567266 is an abundant number, since it is smaller than the sum of its proper divisors (4063680222).

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

4021567266 is a wasteful number, since it uses less digits than its factorization.

4021567266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509417.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 4021567266 is about 63415.8281976984. The cubic root of 4021567266 is about 1590.2489313981.

The spelling of 4021567266 in words is "four billion, twenty-one million, five hundred sixty-seven thousand, two hundred sixty-six".