12151691840752 has 40 divisors (see below), whose sum is σ = 23800932087296. Its totient is φ = 6009591177216.

The previous prime is 12151691840737. The next prime is 12151691840789. The reversal of 12151691840752 is 25704819615121.

It is a super-2 number, since 2×12151691840752² (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 12151691840752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226888 + ... + 4935064.

Almost surely, 2^{12151691840752} is an apocalyptic number.

It is an amenable number.

12151691840752 is a deficient number, since it is larger than the sum of its proper divisors (11649240246544).

12151691840752 is a wasteful number, since it uses less digits than its factorization.

12151691840752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709945 (or 4709939 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 12151691840752 in words is "twelve trillion, one hundred fifty-one billion, six hundred ninety-one million, eight hundred forty thousand, seven hundred fifty-two".