2001423332040 has 64 divisors (see below), whose sum is σ = 6550112727360. Its totient is φ = 485193534720.

The previous prime is 2001423331991. The next prime is 2001423332057. The reversal of 2001423332040 is 402333241002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2001423332040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758113579 + ... + 758116218.

It is an arithmetic number, because the mean of its divisors is an integer number (102345511365).

Almost surely, 2^{2001423332040} is an apocalyptic number.

2001423332040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001423332040 is an abundant number, since it is smaller than the sum of its proper divisors (4548689395320).

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

2001423332040 is a wasteful number, since it uses less digits than its factorization.

2001423332040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516229822 (or 1516229818 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 2001423332040 its reverse (402333241002), we get a palindrome (2403756573042).

The spelling of 2001423332040 in words is "two trillion, one billion, four hundred twenty-three million, three hundred thirty-two thousand, forty".