2106757427749 has 16 divisors (see below), whose sum is σ = 2280499721920. Its totient is φ = 1934691816960.

The previous prime is 2106757427693. The next prime is 2106757427779. The reversal of 2106757427749 is 9477247576012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2106757427749 - 2²¹ = 2106755330597 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 (2106757427779) 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, 6611317 + ... + 6922645.

It is an arithmetic number, because the mean of its divisors is an integer number (142531232620).

Almost surely, 2^{2106757427749} is an apocalyptic number.

It is an amenable number.

2106757427749 is a deficient number, since it is larger than the sum of its proper divisors (173742294171).

2106757427749 is a wasteful number, since it uses less digits than its factorization.

2106757427749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314020.

The product of its (nonzero) digits is 41489280, while the sum is 61.

The spelling of 2106757427749 in words is "two trillion, one hundred six billion, seven hundred fifty-seven million, four hundred twenty-seven thousand, seven hundred forty-nine".