2102505669 has 12 divisors (see below), whose sum is σ = 3313039392. Its totient is φ = 1274245800.

The previous prime is 2102505659. The next prime is 2102505677. The reversal of 2102505669 is 9665052012.

It is not a de Polignac number, because 2102505669 - 2⁵ = 2102505637 is a prime.

It is a super-2 number, since 2×2102505669² = 8841060176354275122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102505659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10618617 + ... + 10618814.

It is an arithmetic number, because the mean of its divisors is an integer number (276086616).

Almost surely, 2^2102505669 is an apocalyptic number.

It is an amenable number.

2102505669 is a deficient number, since it is larger than the sum of its proper divisors (1210533723).

2102505669 is a wasteful number, since it uses less digits than its factorization.

2102505669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21237448 (or 21237445 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 2102505669 is about 45853.0878894759. The cubic root of 2102505669 is about 1281.0882812061.

The spelling of 2102505669 in words is "two billion, one hundred two million, five hundred five thousand, six hundred sixty-nine".