15553878330 has 32 divisors (see below), whose sum is σ = 38338210944. Its totient is φ = 4035600576.

The previous prime is 15553878313. The next prime is 15553878331. The reversal of 15553878330 is 3387835551.

It is a happy number.

It is a super-2 number, since 2×15553878330² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15553878330.

It is not an unprimeable number, because it can be changed into a prime (15553878331) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7005142 + ... + 7007361.

It is an arithmetic number, because the mean of its divisors is an integer number (1198069092).

Almost surely, 2^15553878330 is an apocalyptic number.

15553878330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15553878330 is an abundant number, since it is smaller than the sum of its proper divisors (22784332614).

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

15553878330 is a wasteful number, since it uses less digits than its factorization.

15553878330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14012550.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 15553878330 in words is "fifteen billion, five hundred fifty-three million, eight hundred seventy-eight thousand, three hundred thirty".