1264343523120 has 60 divisors (see below), whose sum is σ = 4246087000896. Its totient is φ = 337158272640.

The previous prime is 1264343523103. The next prime is 1264343523143. The reversal of 1264343523120 is 213253434621.

1264343523120 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 3 + 4 + 3 + 523 + 120 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 878015616 + ... + 878017055.

Almost surely, 2^{1264343523120} is an apocalyptic number.

1264343523120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264343523120 is an abundant number, since it is smaller than the sum of its proper divisors (2981743477776).

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

1264343523120 is a wasteful number, since it uses less digits than its factorization.

1264343523120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756032690 (or 1756032681 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 1264343523120 its reverse (213253434621), we get a palindrome (1477596957741).

The spelling of 1264343523120 in words is "one trillion, two hundred sixty-four billion, three hundred forty-three million, five hundred twenty-three thousand, one hundred twenty".