1263758954216 has 32 divisors (see below), whose sum is σ = 2588358430080. Its totient is φ = 573681014400.

The previous prime is 1263758954209. The next prime is 1263758954231. The reversal of 1263758954216 is 6124598573621.

It is a super-2 number, since 2×1263758954216² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9368576 + ... + 9502511.

It is an arithmetic number, because the mean of its divisors is an integer number (80886200940).

Almost surely, 2^{1263758954216} is an apocalyptic number.

It is an amenable number.

1263758954216 is an abundant number, since it is smaller than the sum of its proper divisors (1324599475864).

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

1263758954216 is a wasteful number, since it uses less digits than its factorization.

1263758954216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18871865 (or 18871861 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 59.

The spelling of 1263758954216 in words is "one trillion, two hundred sixty-three billion, seven hundred fifty-eight million, nine hundred fifty-four thousand, two hundred sixteen".