4000066026 has 64 divisors (see below), whose sum is σ = 9074128896. Its totient is φ = 1164873600.

The previous prime is 4000066003. The next prime is 4000066073. The reversal of 4000066026 is 6206600004.

It is a junction number, because it is equal to n+sod(n) for n = 4000065987 and 4000066005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170271 + ... + 192333.

It is an arithmetic number, because the mean of its divisors is an integer number (141783264).

Almost surely, 2^4000066026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000066026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4537064448).

4000066026 is an abundant number, since it is smaller than the sum of its proper divisors (5074062870).

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

4000066026 is a wasteful number, since it uses less digits than its factorization.

4000066026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22187.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4000066026 is about 63246.0751825756. The cubic root of 4000066026 is about 1587.4097860653.

The spelling of 4000066026 in words is "four billion, sixty-six thousand, twenty-six".