2102605512247 has 16 divisors (see below), whose sum is σ = 2355603608160. Its totient is φ = 1865055117312.

The previous prime is 2102605512233. The next prime is 2102605512257. The reversal of 2102605512247 is 7422155062012.

It is a de Polignac number, because none of the positive numbers 2^k-2102605512247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102605512257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16801948 + ... + 16926625.

It is an arithmetic number, because the mean of its divisors is an integer number (147225225510).

Almost surely, 2^{2102605512247} is an apocalyptic number.

2102605512247 is a deficient number, since it is larger than the sum of its proper divisors (252998095913).

2102605512247 is a wasteful number, since it uses less digits than its factorization.

2102605512247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33728802.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 2102605512247 in words is "two trillion, one hundred two billion, six hundred five million, five hundred twelve thousand, two hundred forty-seven".