12155604330 has 32 divisors (see below), whose sum is σ = 30179433600. Its totient is φ = 3129718592.

The previous prime is 12155604319. The next prime is 12155604337. The reversal of 12155604330 is 3340655121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12155604337) 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, 6985110 + ... + 6986849.

It is an arithmetic number, because the mean of its divisors is an integer number (943107300).

Almost surely, 2^12155604330 is an apocalyptic number.

12155604330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12155604330 is an abundant number, since it is smaller than the sum of its proper divisors (18023829270).

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

12155604330 is a wasteful number, since it uses less digits than its factorization.

12155604330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13971998.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 12155604330 in words is "twelve billion, one hundred fifty-five million, six hundred four thousand, three hundred thirty".