15551054330 has 32 divisors (see below), whose sum is σ = 32301345024. Its totient is φ = 5280022656.

The previous prime is 15551054329. The next prime is 15551054333. The reversal of 15551054330 is 3345015551.

It is a super-2 number, since 2×15551054330² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15551054333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071227 + ... + 1085646.

It is an arithmetic number, because the mean of its divisors is an integer number (1009417032).

Almost surely, 2^15551054330 is an apocalyptic number.

15551054330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15551054330 is an abundant number, since it is smaller than the sum of its proper divisors (16750290694).

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

15551054330 is a wasteful number, since it uses less digits than its factorization.

15551054330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156990.

The product of its (nonzero) digits is 22500, while the sum is 32.

Adding to 15551054330 its reverse (3345015551), we get a palindrome (18896069881).

The spelling of 15551054330 in words is "fifteen billion, five hundred fifty-one million, fifty-four thousand, three hundred thirty".