2106005390707 has 4 divisors (see below), whose sum is σ = 2106016754040. Its totient is φ = 2105994027376.

The previous prime is 2106005390701. The next prime is 2106005390717. The reversal of 2106005390707 is 7070935006012.

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 2106005390707 - 2¹⁹ = 2106004866419 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 2106005390707.

It is not an unprimeable number, because it can be changed into a prime (2106005390701) 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, 5398978 + ... + 5775895.

It is an arithmetic number, because the mean of its divisors is an integer number (526504188510).

Almost surely, 2^{2106005390707} is an apocalyptic number.

2106005390707 is a deficient number, since it is larger than the sum of its proper divisors (11363333).

2106005390707 is a wasteful number, since it uses less digits than its factorization.

2106005390707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363332.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 2106005390707 in words is "two trillion, one hundred six billion, five million, three hundred ninety thousand, seven hundred seven".