15545534455 has 8 divisors (see below), whose sum is σ = 20350517904. Its totient is φ = 11305843200.

The previous prime is 15545534453. The next prime is 15545534461. The reversal of 15545534455 is 55443554551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15545534455 - 2¹ = 15545534453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15545534453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141322986 + ... + 141323095.

It is an arithmetic number, because the mean of its divisors is an integer number (2543814738).

Almost surely, 2^15545534455 is an apocalyptic number.

15545534455 is a deficient number, since it is larger than the sum of its proper divisors (4804983449).

15545534455 is a wasteful number, since it uses less digits than its factorization.

15545534455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282646097.

The product of its digits is 3000000, while the sum is 46.

The spelling of 15545534455 in words is "fifteen billion, five hundred forty-five million, five hundred thirty-four thousand, four hundred fifty-five".