51951406108989 has 8 divisors (see below), whose sum is σ = 69504952884192. Its totient is φ = 34516065036560.

The previous prime is 51951406108939. The next prime is 51951406109033. The reversal of 51951406108989 is 98980160415915.

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 51951406108989 - 2³³ = 51942816174397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51951406108939) 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, 29551424667 + ... + 29551426424.

It is an arithmetic number, because the mean of its divisors is an integer number (8688119110524).

Almost surely, 2^{51951406108989} is an apocalyptic number.

It is an amenable number.

51951406108989 is a deficient number, since it is larger than the sum of its proper divisors (17553546775203).

51951406108989 is a wasteful number, since it uses less digits than its factorization.

51951406108989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59102851387.

The product of its (nonzero) digits is 27993600, while the sum is 66.

The spelling of 51951406108989 in words is "fifty-one trillion, nine hundred fifty-one billion, four hundred six million, one hundred eight thousand, nine hundred eighty-nine".