2745746563421 has 4 divisors (see below), whose sum is σ = 2746656055200. Its totient is φ = 2744837071644.

The previous prime is 2745746563403. The next prime is 2745746563471. The reversal of 2745746563421 is 1243656475472.

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 2745746563421 - 2¹⁰ = 2745746562397 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 (2745746563471) 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, 454741361 + ... + 454747398.

It is an arithmetic number, because the mean of its divisors is an integer number (686664013800).

Almost surely, 2^{2745746563421} is an apocalyptic number.

It is an amenable number.

2745746563421 is a deficient number, since it is larger than the sum of its proper divisors (909491779).

2745746563421 is an equidigital number, since it uses as much as digits as its factorization.

2745746563421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909491778.

The product of its digits is 33868800, while the sum is 56.

The spelling of 2745746563421 in words is "two trillion, seven hundred forty-five billion, seven hundred forty-six million, five hundred sixty-three thousand, four hundred twenty-one".