12156903284 has 6 divisors (see below), whose sum is σ = 21274580754. Its totient is φ = 6078451640.

The previous prime is 12156903277. The next prime is 12156903287. The reversal of 12156903284 is 48230965121.

It can be written as a sum of positive squares in only one way, i.e., 11787879184 + 369024100 = 108572^2 + 19210^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12156903287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1519612907 + ... + 1519612914.

It is an arithmetic number, because the mean of its divisors is an integer number (3545763459).

Almost surely, 2^12156903284 is an apocalyptic number.

It is an amenable number.

12156903284 is a deficient number, since it is larger than the sum of its proper divisors (9117677470).

12156903284 is a wasteful number, since it uses less digits than its factorization.

12156903284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039225825 (or 3039225823 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 12156903284 in words is "twelve billion, one hundred fifty-six million, nine hundred three thousand, two hundred eighty-four".