4251046643261 has 8 divisors (see below), whose sum is σ = 4637522977248. Its totient is φ = 3864573234000.

The previous prime is 4251046643257. The next prime is 4251046643269. The reversal of 4251046643261 is 1623466401524.

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

It is a cyclic number.

It is not a de Polignac number, because 4251046643261 - 2² = 4251046643257 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 (4251046643269) 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, 3250826 + ... + 4366916.

It is an arithmetic number, because the mean of its divisors is an integer number (579690372156).

Almost surely, 2^{4251046643261} is an apocalyptic number.

It is an amenable number.

4251046643261 is a deficient number, since it is larger than the sum of its proper divisors (386476333987).

4251046643261 is a wasteful number, since it uses less digits than its factorization.

4251046643261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462363.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 4251046643261 in words is "four trillion, two hundred fifty-one billion, forty-six million, six hundred forty-three thousand, two hundred sixty-one".