6454621007251 has 8 divisors (see below), whose sum is σ = 6464533476240. Its totient is φ = 6444715865952.

The previous prime is 6454621007171. The next prime is 6454621007291. The reversal of 6454621007251 is 1527001264546.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6454621007251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6454621007198 and 6454621007207.

It is not an unprimeable number, because it can be changed into a prime (6454621007291) 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, 67561 + ... + 3593578.

It is an arithmetic number, because the mean of its divisors is an integer number (808066684530).

Almost surely, 2^{6454621007251} is an apocalyptic number.

6454621007251 is a deficient number, since it is larger than the sum of its proper divisors (9912468989).

6454621007251 is a wasteful number, since it uses less digits than its factorization.

6454621007251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663845.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 6454621007251 in words is "six trillion, four hundred fifty-four billion, six hundred twenty-one million, seven thousand, two hundred fifty-one".