2001400236739 has 2 divisors, whose sum is σ = 2001400236740. Its totient is φ = 2001400236738.

The previous prime is 2001400236497. The next prime is 2001400236799. The reversal of 2001400236739 is 9376320041002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001400236739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001400236698 and 2001400236707.

It is not a weakly prime, because it can be changed into another prime (2001400236799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000700118369 + 1000700118370.

It is an arithmetic number, because the mean of its divisors is an integer number (1000700118370).

Almost surely, 2^{2001400236739} is an apocalyptic number.

2001400236739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001400236739 is an equidigital number, since it uses as much as digits as its factorization.

2001400236739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 2001400236739 in words is "two trillion, one billion, four hundred million, two hundred thirty-six thousand, seven hundred thirty-nine".