4251453852621 has 8 divisors (see below), whose sum is σ = 5673521537920. Its totient is φ = 2831844367872.

The previous prime is 4251453852517. The next prime is 4251453852643. The reversal of 4251453852621 is 1262583541524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4251453852621 - 2¹⁷ = 4251453721549 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 (4251453852661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614546101 + ... + 614553018.

It is an arithmetic number, because the mean of its divisors is an integer number (709190192240).

Almost surely, 2^{4251453852621} is an apocalyptic number.

It is an amenable number.

4251453852621 is a deficient number, since it is larger than the sum of its proper divisors (1422067685299).

4251453852621 is a wasteful number, since it uses less digits than its factorization.

4251453852621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229100275.

The product of its digits is 2304000, while the sum is 48.

The spelling of 4251453852621 in words is "four trillion, two hundred fifty-one billion, four hundred fifty-three million, eight hundred fifty-two thousand, six hundred twenty-one".