12645143950 has 24 divisors (see below), whose sum is σ = 23842165968. Its totient is φ = 4988767680.

The previous prime is 12645143947. The next prime is 12645143969. The reversal of 12645143950 is 5934154621.

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 11 ways as a sum of consecutive naturals, for example, 1728562 + ... + 1735861.

It is an arithmetic number, because the mean of its divisors is an integer number (993423582).

Almost surely, 2^12645143950 is an apocalyptic number.

12645143950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12645143950 is a deficient number, since it is larger than the sum of its proper divisors (11197022018).

12645143950 is a wasteful number, since it uses less digits than its factorization.

12645143950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464508 (or 3464503 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 12645143950 in words is "twelve billion, six hundred forty-five million, one hundred forty-three thousand, nine hundred fifty".