1263428961782 has 8 divisors (see below), whose sum is σ = 2040923707536. Its totient is φ = 583121059272.

The previous prime is 1263428961779. The next prime is 1263428961787. The reversal of 1263428961782 is 2871698243621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263428961787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24296710778 + ... + 24296710829.

It is an arithmetic number, because the mean of its divisors is an integer number (255115463442).

Almost surely, 2^{1263428961782} is an apocalyptic number.

1263428961782 is a deficient number, since it is larger than the sum of its proper divisors (777494745754).

1263428961782 is a wasteful number, since it uses less digits than its factorization.

1263428961782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48593421622.

The product of its digits is 13934592, while the sum is 59.

The spelling of 1263428961782 in words is "one trillion, two hundred sixty-three billion, four hundred twenty-eight million, nine hundred sixty-one thousand, seven hundred eighty-two".