3453024621521 has 4 divisors (see below), whose sum is σ = 3453045521844. Its totient is φ = 3453003721200.

The previous prime is 3453024621517. The next prime is 3453024621539. The reversal of 3453024621521 is 1251264203543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2025384385600 + 1427640235921 = 1423160^2 + 1194839^2 .

It is a cyclic number.

It is not a de Polignac number, because 3453024621521 - 2² = 3453024621517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3453024621581) 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, 10200350 + ... + 10533431.

It is an arithmetic number, because the mean of its divisors is an integer number (863261380461).

Almost surely, 2^{3453024621521} is an apocalyptic number.

It is an amenable number.

3453024621521 is a deficient number, since it is larger than the sum of its proper divisors (20900323).

3453024621521 is a wasteful number, since it uses less digits than its factorization.

3453024621521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20900322.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 3453024621521 in words is "three trillion, four hundred fifty-three billion, twenty-four million, six hundred twenty-one thousand, five hundred twenty-one".