51450032505 has 32 divisors (see below), whose sum is σ = 86202878976. Its totient is φ = 26154177984.

The previous prime is 51450032467. The next prime is 51450032507. The reversal of 51450032505 is 50523005415.

It is a happy number.

It is not a de Polignac number, because 51450032505 - 2⁹ = 51450031993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51450032507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165847 + ... + 361116.

It is an arithmetic number, because the mean of its divisors is an integer number (2693839968).

Almost surely, 2^51450032505 is an apocalyptic number.

It is an amenable number.

51450032505 is a deficient number, since it is larger than the sum of its proper divisors (34752846471).

51450032505 is a wasteful number, since it uses less digits than its factorization.

51450032505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527277.

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 51450032505 in words is "fifty-one billion, four hundred fifty million, thirty-two thousand, five hundred five".