51651106501505 has 32 divisors (see below), whose sum is σ = 73121546078208. Its totient is φ = 34275052569600.

The previous prime is 51651106501487. The next prime is 51651106501529. The reversal of 51651106501505 is 50510560115615.

It is not a de Polignac number, because 51651106501505 - 2¹² = 51651106497409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163170185 + ... + 163486425.

It is an arithmetic number, because the mean of its divisors is an integer number (2285048314944).

Almost surely, 2^{51651106501505} is an apocalyptic number.

It is an amenable number.

51651106501505 is a deficient number, since it is larger than the sum of its proper divisors (21470439576703).

51651106501505 is a wasteful number, since it uses less digits than its factorization.

51651106501505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466817.

The product of its (nonzero) digits is 112500, while the sum is 41.

The spelling of 51651106501505 in words is "fifty-one trillion, six hundred fifty-one billion, one hundred six million, five hundred one thousand, five hundred five".