51642955258271 has 8 divisors (see below), whose sum is σ = 55650055552560. Its totient is φ = 47640792860352.

The previous prime is 51642955258091. The next prime is 51642955258291. The reversal of 51642955258271 is 17285255924615.

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 51642955258271 - 2⁴² = 47244908747167 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 (51642955258291) 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, 1234452365 + ... + 1234494198.

It is an arithmetic number, because the mean of its divisors is an integer number (6956256944070).

Almost surely, 2^{51642955258271} is an apocalyptic number.

51642955258271 is a deficient number, since it is larger than the sum of its proper divisors (4007100294289).

51642955258271 is a wasteful number, since it uses less digits than its factorization.

51642955258271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468948185.

The product of its digits is 60480000, while the sum is 62.

The spelling of 51642955258271 in words is "fifty-one trillion, six hundred forty-two billion, nine hundred fifty-five million, two hundred fifty-eight thousand, two hundred seventy-one".