51009665960029 has 12 divisors (see below), whose sum is σ = 59338774002108. Its totient is φ = 43721834486400.

The previous prime is 51009665960023. The next prime is 51009665960153. The reversal of 51009665960029 is 92006956690015.

It can be written as a sum of positive squares in 2 ways, for example, as 45882022735129 + 5127643224900 = 6773627^2 + 2264430^2 .

It is not a de Polignac number, because 51009665960029 - 2³³ = 51001076025437 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 (51009665960023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5816652 + ... + 11655589.

It is an arithmetic number, because the mean of its divisors is an integer number (4944897833509).

Almost surely, 2^{51009665960029} is an apocalyptic number.

It is an amenable number.

51009665960029 is a deficient number, since it is larger than the sum of its proper divisors (8329108042079).

51009665960029 is a wasteful number, since it uses less digits than its factorization.

51009665960029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531836 (or 17531829 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 58.

The spelling of 51009665960029 in words is "fifty-one trillion, nine billion, six hundred sixty-five million, nine hundred sixty thousand, twenty-nine".