15444450454 has 16 divisors (see below), whose sum is σ = 23424089040. Its totient is φ = 7636692960.

The previous prime is 15444450443. The next prime is 15444450551. The reversal of 15444450454 is 45405444451.

It is a super-2 number, since 2×15444450454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46284 + ... + 181744.

It is an arithmetic number, because the mean of its divisors is an integer number (1464005565).

Almost surely, 2^15444450454 is an apocalyptic number.

15444450454 is a deficient number, since it is larger than the sum of its proper divisors (7979638586).

15444450454 is a wasteful number, since it uses less digits than its factorization.

15444450454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136095.

The product of its (nonzero) digits is 512000, while the sum is 40.

The spelling of 15444450454 in words is "fifteen billion, four hundred forty-four million, four hundred fifty thousand, four hundred fifty-four".