15532553454 has 64 divisors (see below), whose sum is σ = 34836721920. Its totient is φ = 4575467520.

The previous prime is 15532553429. The next prime is 15532553459. The reversal of 15532553454 is 45435523551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15532553459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3619342 + ... + 3623630.

It is an arithmetic number, because the mean of its divisors is an integer number (544323780).

Almost surely, 2^15532553454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15532553454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17418360960).

15532553454 is an abundant number, since it is smaller than the sum of its proper divisors (19304168466).

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

15532553454 is a wasteful number, since it uses less digits than its factorization.

15532553454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825.

The product of its digits is 900000, while the sum is 42.

The spelling of 15532553454 in words is "fifteen billion, five hundred thirty-two million, five hundred fifty-three thousand, four hundred fifty-four".