12011155415 has 8 divisors (see below), whose sum is σ = 16472441760. Its totient is φ = 8236220832.

The previous prime is 12011155391. The next prime is 12011155421. The reversal of 12011155415 is 51455111021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011155415 - 2²² = 12006961111 is a prime.

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, 171587900 + ... + 171587969.

It is an arithmetic number, because the mean of its divisors is an integer number (2059055220).

Almost surely, 2^12011155415 is an apocalyptic number.

12011155415 is a deficient number, since it is larger than the sum of its proper divisors (4461286345).

12011155415 is an equidigital number, since it uses as much as digits as its factorization.

12011155415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343175881.

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 12011155415 its reverse (51455111021), we get a palindrome (63466266436).

The spelling of 12011155415 in words is "twelve billion, eleven million, one hundred fifty-five thousand, four hundred fifteen".