2071391900399 has 4 divisors (see below), whose sum is σ = 2071397154264. Its totient is φ = 2071386646536.

The previous prime is 2071391900351. The next prime is 2071391900401. The reversal of 2071391900399 is 9930091931702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2071391900399 - 2¹² = 2071391896303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2071391900399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071391900339) 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 in 3 ways as a sum of consecutive naturals, for example, 1982912 + ... + 2841605.

It is an arithmetic number, because the mean of its divisors is an integer number (517849288566).

Almost surely, 2^{2071391900399} is an apocalyptic number.

2071391900399 is a deficient number, since it is larger than the sum of its proper divisors (5253865).

2071391900399 is an equidigital number, since it uses as much as digits as its factorization.

2071391900399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253864.

The product of its (nonzero) digits is 826686, while the sum is 53.

The spelling of 2071391900399 in words is "two trillion, seventy-one billion, three hundred ninety-one million, nine hundred thousand, three hundred ninety-nine".