51255231115330 has 64 divisors (see below), whose sum is σ = 101214713808000. Its totient is φ = 18533078161920.

The previous prime is 51255231115243. The next prime is 51255231115343. The reversal of 51255231115330 is 3351113255215.

It is a happy number.

It is a super-2 number, since 2×51255231115330² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51255231115330.

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, 396669214 + ... + 396798406.

It is an arithmetic number, because the mean of its divisors is an integer number (1581479903250).

Almost surely, 2^{51255231115330} is an apocalyptic number.

51255231115330 is a deficient number, since it is larger than the sum of its proper divisors (49959482692670).

51255231115330 is a wasteful number, since it uses less digits than its factorization.

51255231115330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149539.

The product of its (nonzero) digits is 67500, while the sum is 37.

The spelling of 51255231115330 in words is "fifty-one trillion, two hundred fifty-five billion, two hundred thirty-one million, one hundred fifteen thousand, three hundred thirty".