2101538567 has 4 divisors (see below), whose sum is σ = 2212145880. Its totient is φ = 1990931256.

The previous prime is 2101538531. The next prime is 2101538587. The reversal of 2101538567 is 7658351012.

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 2101538567 - 2⁸ = 2101538311 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 2101538567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101538507) 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, 55303628 + ... + 55303665.

It is an arithmetic number, because the mean of its divisors is an integer number (553036470).

Almost surely, 2^2101538567 is an apocalyptic number.

2101538567 is a deficient number, since it is larger than the sum of its proper divisors (110607313).

2101538567 is a wasteful number, since it uses less digits than its factorization.

2101538567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110607312.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 2101538567 is about 45842.5410181417. The cubic root of 2101538567 is about 1280.8918278240.

Adding to 2101538567 its reverse (7658351012), we get a palindrome (9759889579).

The spelling of 2101538567 in words is "two billion, one hundred one million, five hundred thirty-eight thousand, five hundred sixty-seven".