12151015023541 has 4 divisors (see below), whose sum is σ = 12271322103084. Its totient is φ = 12030707944000.

The previous prime is 12151015023517. The next prime is 12151015023583. The reversal of 12151015023541 is 14532051015121.

12151015023541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5944190201041 + 6206824822500 = 2438071^2 + 2491350^2 .

It is a cyclic number.

It is not a de Polignac number, because 12151015023541 - 2¹¹ = 12151015021493 is a prime.

It is a super-2 number, since 2×12151015023541² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151015033541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60153539620 + ... + 60153539821.

It is an arithmetic number, because the mean of its divisors is an integer number (3067830525771).

Almost surely, 2^{12151015023541} is an apocalyptic number.

It is an amenable number.

12151015023541 is a deficient number, since it is larger than the sum of its proper divisors (120307079543).

12151015023541 is a wasteful number, since it uses less digits than its factorization.

12151015023541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120307079542.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 12151015023541 its reverse (14532051015121), we get a palindrome (26683066038662).

The spelling of 12151015023541 in words is "twelve trillion, one hundred fifty-one billion, fifteen million, twenty-three thousand, five hundred forty-one".