12135557038 has 16 divisors (see below), whose sum is σ = 20183730480. Its totient is φ = 5425732800.

The previous prime is 12135557023. The next prime is 12135557053. The reversal of 12135557038 is 83075553121.

It is an interprime number because it is at equal distance from previous prime (12135557023) and next prime (12135557053).

It is a congruent number.

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, 4520103 + ... + 4522786.

It is an arithmetic number, because the mean of its divisors is an integer number (1261483155).

Almost surely, 2^12135557038 is an apocalyptic number.

12135557038 is a deficient number, since it is larger than the sum of its proper divisors (8048173442).

12135557038 is a wasteful number, since it uses less digits than its factorization.

12135557038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042963.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 12135557038 in words is "twelve billion, one hundred thirty-five million, five hundred fifty-seven thousand, thirty-eight".