12151278511838 has 16 divisors (see below), whose sum is σ = 18535969923120. Its totient is φ = 5972623219200.

The previous prime is 12151278511837. The next prime is 12151278511849. The reversal of 12151278511838 is 83811587215121.

It is a happy number.

12151278511838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12151278511838² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12151278511838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151278511837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27382568 + ... + 27822788.

It is an arithmetic number, because the mean of its divisors is an integer number (1158498120195).

Almost surely, 2^{12151278511838} is an apocalyptic number.

12151278511838 is a deficient number, since it is larger than the sum of its proper divisors (6384691411282).

12151278511838 is a wasteful number, since it uses less digits than its factorization.

12151278511838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674203.

The product of its digits is 1075200, while the sum is 53.

The spelling of 12151278511838 in words is "twelve trillion, one hundred fifty-one billion, two hundred seventy-eight million, five hundred eleven thousand, eight hundred thirty-eight".