15510000050660 has 72 divisors (see below), whose sum is σ = 34381736347896. Its totient is φ = 5876405314560.

The previous prime is 15510000050593. The next prime is 15510000050747. The reversal of 15510000050660 is 6605000001551.

It can be written as a sum of positive squares in 4 ways, for example, as 899686396324 + 14610313654336 = 948518^2 + 3822344^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40102364 + ... + 40487276.

It is an arithmetic number, because the mean of its divisors is an integer number (477524115943).

Almost surely, 2^{15510000050660} is an apocalyptic number.

15510000050660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15510000050660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17190868173948).

15510000050660 is an abundant number, since it is smaller than the sum of its proper divisors (18871736297236).

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

15510000050660 is a wasteful number, since it uses less digits than its factorization.

15510000050660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390541 (or 390520 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 15510000050660 in words is "fifteen trillion, five hundred ten billion, fifty thousand, six hundred sixty".