2106168467487 has 128 divisors (see below), whose sum is σ = 3481377177600. Its totient is φ = 1106055409536.

The previous prime is 2106168467483. The next prime is 2106168467503. The reversal of 2106168467487 is 7847648616012.

It is not a de Polignac number, because 2106168467487 - 2² = 2106168467483 is a prime.

It is a super-2 number, since 2×2106168467487² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2106168467487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106168467483) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 471915418 + ... + 471919880.

It is an arithmetic number, because the mean of its divisors is an integer number (27198259200).

Almost surely, 2^{2106168467487} is an apocalyptic number.

2106168467487 is a deficient number, since it is larger than the sum of its proper divisors (1375208710113).

2106168467487 is a wasteful number, since it uses less digits than its factorization.

2106168467487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825.

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 2106168467487 in words is "two trillion, one hundred six billion, one hundred sixty-eight million, four hundred sixty-seven thousand, four hundred eighty-seven".