15538532755 has 16 divisors (see below), whose sum is σ = 18784864224. Its totient is φ = 12338752000.

The previous prime is 15538532753. The next prime is 15538532767. The reversal of 15538532755 is 55723583551.

It is not a de Polignac number, because 15538532755 - 2¹ = 15538532753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15538532699 and 15538532708.

It is not an unprimeable number, because it can be changed into a prime (15538532753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346587 + ... + 388843.

It is an arithmetic number, because the mean of its divisors is an integer number (1174054014).

Almost surely, 2^15538532755 is an apocalyptic number.

15538532755 is a deficient number, since it is larger than the sum of its proper divisors (3246331469).

15538532755 is a wasteful number, since it uses less digits than its factorization.

15538532755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42806.

The product of its digits is 3150000, while the sum is 49.

The spelling of 15538532755 in words is "fifteen billion, five hundred thirty-eight million, five hundred thirty-two thousand, seven hundred fifty-five".