2089909938497 has 4 divisors (see below), whose sum is σ = 2090044812996. Its totient is φ = 2089775064000.

The previous prime is 2089909938449. The next prime is 2089909938503. The reversal of 2089909938497 is 7948399099802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2006956722241 + 82953216256 = 1416671^2 + 288016^2 .

It is a cyclic number.

It is not a de Polignac number, because 2089909938497 - 2¹⁶ = 2089909872961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2089909938197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67414004 + ... + 67444997.

It is an arithmetic number, because the mean of its divisors is an integer number (522511203249).

Almost surely, 2^{2089909938497} is an apocalyptic number.

It is an amenable number.

2089909938497 is a deficient number, since it is larger than the sum of its proper divisors (134874499).

2089909938497 is a wasteful number, since it uses less digits than its factorization.

2089909938497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134874498.

The product of its (nonzero) digits is 634894848, while the sum is 77.

The spelling of 2089909938497 in words is "two trillion, eighty-nine billion, nine hundred nine million, nine hundred thirty-eight thousand, four hundred ninety-seven".