2001372543066 has 32 divisors (see below), whose sum is σ = 4317053791680. Its totient is φ = 614891902464.

The previous prime is 2001372543017. The next prime is 2001372543083. The reversal of 2001372543066 is 6603452731002.

It is a super-2 number, since 2×2001372543066² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19010376 + ... + 19115363.

It is an arithmetic number, because the mean of its divisors is an integer number (134907930990).

Almost surely, 2^{2001372543066} is an apocalyptic number.

2001372543066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2001372543066 is an abundant number, since it is smaller than the sum of its proper divisors (2315681248614).

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

2001372543066 is a wasteful number, since it uses less digits than its factorization.

2001372543066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38126430.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 2001372543066 in words is "two trillion, one billion, three hundred seventy-two million, five hundred forty-three thousand, sixty-six".