15504045004 has 24 divisors (see below), whose sum is σ = 32008352768. Its totient is φ = 6430248720.

The previous prime is 15504044993. The next prime is 15504045043. The reversal of 15504045004 is 40054040551.

It is a super-2 number, since 2×15504045004² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8930034 + ... + 8931769.

Almost surely, 2^15504045004 is an apocalyptic number.

15504045004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15504045004 is an abundant number, since it is smaller than the sum of its proper divisors (16504307764).

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

15504045004 is a wasteful number, since it uses less digits than its factorization.

15504045004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17861845 (or 17861843 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 15504045004 its reverse (40054040551), we get a palindrome (55558085555).

The spelling of 15504045004 in words is "fifteen billion, five hundred four million, forty-five thousand, four".