1212743169264 has 80 divisors (see below), whose sum is σ = 3597611345280. Its totient is φ = 348155930880.

The previous prime is 1212743169247. The next prime is 1212743169269. The reversal of 1212743169264 is 4629613472121.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212743169269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60433707 + ... + 60453770.

It is an arithmetic number, because the mean of its divisors is an integer number (44970141816).

Almost surely, 2^{1212743169264} is an apocalyptic number.

It is an amenable number.

1212743169264 is an abundant number, since it is smaller than the sum of its proper divisors (2384868176016).

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

1212743169264 is a wasteful number, since it uses less digits than its factorization.

1212743169264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120887518 (or 120887512 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The spelling of 1212743169264 in words is "one trillion, two hundred twelve billion, seven hundred forty-three million, one hundred sixty-nine thousand, two hundred sixty-four".