12155002628 has 6 divisors (see below), whose sum is σ = 21271254606. Its totient is φ = 6077501312.

The previous prime is 12155002627. The next prime is 12155002693. The reversal of 12155002628 is 82620055121.

It can be written as a sum of positive squares in only one way, i.e., 11729323204 + 425679424 = 108302^2 + 20632^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12155002594 and 12155002603.

It is not an unprimeable number, because it can be changed into a prime (12155002621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1519375325 + ... + 1519375332.

It is an arithmetic number, because the mean of its divisors is an integer number (3545209101).

Almost surely, 2^12155002628 is an apocalyptic number.

It is an amenable number.

12155002628 is a deficient number, since it is larger than the sum of its proper divisors (9116251978).

12155002628 is a wasteful number, since it uses less digits than its factorization.

12155002628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038750661 (or 3038750659 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 12155002628 its reverse (82620055121), we get a palindrome (94775057749).

The spelling of 12155002628 in words is "twelve billion, one hundred fifty-five million, two thousand, six hundred twenty-eight".