51615560155016 has 128 divisors (see below), whose sum is σ = 114991845091200. Its totient is φ = 21411841536000.

The previous prime is 51615560154937. The next prime is 51615560155037. The reversal of 51615560155016 is 61055106551615.

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, 37649426 + ... + 38996286.

It is an arithmetic number, because the mean of its divisors is an integer number (898373789775).

Almost surely, 2^{51615560155016} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51615560155016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57495922545600).

51615560155016 is an abundant number, since it is smaller than the sum of its proper divisors (63376284936184).

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

51615560155016 is a wasteful number, since it uses less digits than its factorization.

51615560155016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347271 (or 1347267 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 51615560155016 in words is "fifty-one trillion, six hundred fifteen billion, five hundred sixty million, one hundred fifty-five thousand, sixteen".