2120454727723 has 4 divisors (see below), whose sum is σ = 2120499314280. Its totient is φ = 2120410141168.

The previous prime is 2120454727673. The next prime is 2120454727841. The reversal of 2120454727723 is 3277274540212.

It is a happy number.

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 2120454727723 - 2⁹ = 2120454727211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120454767723) 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, 22221865 + ... + 22317082.

It is an arithmetic number, because the mean of its divisors is an integer number (530124828570).

Almost surely, 2^{2120454727723} is an apocalyptic number.

2120454727723 is a deficient number, since it is larger than the sum of its proper divisors (44586557).

2120454727723 is an equidigital number, since it uses as much as digits as its factorization.

2120454727723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44586556.

The product of its (nonzero) digits is 1317120, while the sum is 46.

The spelling of 2120454727723 in words is "two trillion, one hundred twenty billion, four hundred fifty-four million, seven hundred twenty-seven thousand, seven hundred twenty-three".