2106616507 has 4 divisors (see below), whose sum is σ = 2217491080. Its totient is φ = 1995741936.

The previous prime is 2106616471. The next prime is 2106616541. The reversal of 2106616507 is 7056166012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106616507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106616007) 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, 55437258 + ... + 55437295.

It is an arithmetic number, because the mean of its divisors is an integer number (554372770).

Almost surely, 2^2106616507 is an apocalyptic number.

2106616507 is a deficient number, since it is larger than the sum of its proper divisors (110874573).

2106616507 is a wasteful number, since it uses less digits than its factorization.

2106616507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110874572.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2106616507 is about 45897.8921847180. The cubic root of 2106616507 is about 1281.9226694187.

It can be divided in two parts, 21066 and 16507, that added together give a palindrome (37573).

The spelling of 2106616507 in words is "two billion, one hundred six million, six hundred sixteen thousand, five hundred seven".