2120746513669 has 4 divisors (see below), whose sum is σ = 2423710301344. Its totient is φ = 1817782725996.

The previous prime is 2120746513661. The next prime is 2120746513679. The reversal of 2120746513669 is 9663156470212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120746513669 - 2³ = 2120746513661 is a prime.

It is a super-2 number, since 2×2120746513669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120746513661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151481893827 + ... + 151481893840.

It is an arithmetic number, because the mean of its divisors is an integer number (605927575336).

Almost surely, 2^{2120746513669} is an apocalyptic number.

It is an amenable number.

2120746513669 is a deficient number, since it is larger than the sum of its proper divisors (302963787675).

2120746513669 is an equidigital number, since it uses as much as digits as its factorization.

2120746513669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302963787674.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 2120746513669 in words is "two trillion, one hundred twenty billion, seven hundred forty-six million, five hundred thirteen thousand, six hundred sixty-nine".