1263801053358 has 24 divisors (see below), whose sum is σ = 2796495949728. Its totient is φ = 412303889472.

The previous prime is 1263801053323. The next prime is 1263801053369. The reversal of 1263801053358 is 8533501083621.

1263801053358 is a `hidden beast` number, since 1 + 2 + 63 + 8 + 0 + 1 + 0 + 533 + 58 = 666.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 746926491 + ... + 746928182.

It is an arithmetic number, because the mean of its divisors is an integer number (116520664572).

Almost surely, 2^{1263801053358} is an apocalyptic number.

1263801053358 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1263801053358 is an abundant number, since it is smaller than the sum of its proper divisors (1532694896370).

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

1263801053358 is a wasteful number, since it uses less digits than its factorization.

1263801053358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493854728 (or 1493854725 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 1263801053358 in words is "one trillion, two hundred sixty-three billion, eight hundred one million, fifty-three thousand, three hundred fifty-eight".