15555505050553 has 16 divisors (see below), whose sum is σ = 17053981249536. Its totient is φ = 14102417272320.

The previous prime is 15555505050551. The next prime is 15555505050619. The reversal of 15555505050553 is 35505050555551.

It is not a de Polignac number, because 15555505050553 - 2¹ = 15555505050551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15555505050497 and 15555505050506.

It is not an unprimeable number, because it can be changed into a prime (15555505050551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46918201 + ... + 47248582.

It is an arithmetic number, because the mean of its divisors is an integer number (1065873828096).

Almost surely, 2^{15555505050553} is an apocalyptic number.

15555505050553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15555505050553 is a deficient number, since it is larger than the sum of its proper divisors (1498476198983).

15555505050553 is a wasteful number, since it uses less digits than its factorization.

15555505050553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94167024.

The product of its (nonzero) digits is 5859375, while the sum is 49.

The spelling of 15555505050553 in words is "fifteen trillion, five hundred fifty-five billion, five hundred five million, fifty thousand, five hundred fifty-three".