51354440536530 has 64 divisors (see below), whose sum is σ = 125891954431488. Its totient is φ = 13401127714560.

The previous prime is 51354440536507. The next prime is 51354440536549. The reversal of 51354440536530 is 3563504445315.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51354440536530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6643500 + ... + 12117960.

It is an arithmetic number, because the mean of its divisors is an integer number (1967061787992).

Almost surely, 2^{51354440536530} is an apocalyptic number.

51354440536530 is an abundant number, since it is smaller than the sum of its proper divisors (74537513894958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51354440536530 is a wasteful number, since it uses less digits than its factorization.

51354440536530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481171.

The product of its (nonzero) digits is 6480000, while the sum is 48.

The spelling of 51354440536530 in words is "fifty-one trillion, three hundred fifty-four billion, four hundred forty million, five hundred thirty-six thousand, five hundred thirty".