2001400236740 has 48 divisors (see below), whose sum is σ = 4214567168112. Its totient is φ = 798346492416.

The previous prime is 2001400236739. The next prime is 2001400236799. The reversal of 2001400236740 is 476320041002.

It can be written as a sum of positive squares in 8 ways, for example, as 60706060996 + 1940694175744 = 246386^2 + 1393088^2 .

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, 34565654 + ... + 34623506.

It is an arithmetic number, because the mean of its divisors is an integer number (87803482669).

Almost surely, 2^{2001400236740} is an apocalyptic number.

2001400236740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001400236740 is an abundant number, since it is smaller than the sum of its proper divisors (2213166931372).

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

2001400236740 is a wasteful number, since it uses less digits than its factorization.

2001400236740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62616 (or 62614 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 2001400236740 its reverse (476320041002), we get a palindrome (2477720277742).

The spelling of 2001400236740 in words is "two trillion, one billion, four hundred million, two hundred thirty-six thousand, seven hundred forty".