40143170020866 has 128 divisors (see below), whose sum is σ = 91495067553792. Its totient is φ = 11635224192000.

The previous prime is 40143170020843. The next prime is 40143170020867. The reversal of 40143170020866 is 66802007134104.

It is a super-2 number, since 2×40143170020866² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143170020867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32380411 + ... + 33597281.

It is an arithmetic number, because the mean of its divisors is an integer number (714805215264).

Almost surely, 2^{40143170020866} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40143170020866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45747533776896).

40143170020866 is an abundant number, since it is smaller than the sum of its proper divisors (51351897532926).

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

40143170020866 is a wasteful number, since it uses less digits than its factorization.

40143170020866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217168.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 40143170020866 in words is "forty trillion, one hundred forty-three billion, one hundred seventy million, twenty thousand, eight hundred sixty-six".