15540523053 has 16 divisors (see below), whose sum is σ = 22974964032. Its totient is φ = 9264096000.

The previous prime is 15540523013. The next prime is 15540523081. The reversal of 15540523053 is 35032504551.

It is a happy number.

It is not a de Polignac number, because 15540523053 - 2¹⁰ = 15540522029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15540523013) 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, 3858028 + ... + 3862053.

It is an arithmetic number, because the mean of its divisors is an integer number (1435935252).

Almost surely, 2^15540523053 is an apocalyptic number.

It is an amenable number.

15540523053 is a deficient number, since it is larger than the sum of its proper divisors (7434440979).

15540523053 is a wasteful number, since it uses less digits than its factorization.

15540523053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720156.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 15540523053 in words is "fifteen billion, five hundred forty million, five hundred twenty-three thousand, fifty-three".