12145615747998 has 32 divisors (see below), whose sum is σ = 24856502706816. Its totient is φ = 3954329432928.

The previous prime is 12145615747943. The next prime is 12145615748093. The reversal of 12145615747998 is 89974751654121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19896336 + ... + 20497692.

It is an arithmetic number, because the mean of its divisors is an integer number (776765709588).

Almost surely, 2^{12145615747998} is an apocalyptic number.

12145615747998 is an abundant number, since it is smaller than the sum of its proper divisors (12710886958818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12145615747998 is a wasteful number, since it uses less digits than its factorization.

12145615747998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679688.

The product of its digits is 152409600, while the sum is 69.

The spelling of 12145615747998 in words is "twelve trillion, one hundred forty-five billion, six hundred fifteen million, seven hundred forty-seven thousand, nine hundred ninety-eight".