1263662212472 has 32 divisors (see below), whose sum is σ = 2585074193280. Its totient is φ = 574322897760.

The previous prime is 1263662212441. The next prime is 1263662212513. The reversal of 1263662212472 is 2742122663621.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 122588 + ... + 1594475.

It is an arithmetic number, because the mean of its divisors is an integer number (80783568540).

Almost surely, 2^{1263662212472} is an apocalyptic number.

It is an amenable number.

1263662212472 is an abundant number, since it is smaller than the sum of its proper divisors (1321411980808).

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

1263662212472 is a wasteful number, since it uses less digits than its factorization.

1263662212472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725443 (or 1725439 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The spelling of 1263662212472 in words is "one trillion, two hundred sixty-three billion, six hundred sixty-two million, two hundred twelve thousand, four hundred seventy-two".