15553012000 has 48 divisors (see below), whose sum is σ = 38213760312. Its totient is φ = 6221203200.

The previous prime is 15553011989. The next prime is 15553012031. The reversal of 15553012000 is 21035551.

It can be written as a sum of positive squares in 4 ways, for example, as 9012084624 + 6540927376 = 94932^2 + 80876^2 .

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, 1940127 + ... + 1948126.

Almost surely, 2^15553012000 is an apocalyptic number.

15553012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15553012000 is an abundant number, since it is smaller than the sum of its proper divisors (22660748312).

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

15553012000 is an equidigital number, since it uses as much as digits as its factorization.

15553012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888278 (or 3888260 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

Adding to 15553012000 its reverse (21035551), we get a palindrome (15574047551).

The spelling of 15553012000 in words is "fifteen billion, five hundred fifty-three million, twelve thousand".