1263370914978 has 16 divisors (see below), whose sum is σ = 2527663694976. Its totient is φ = 420969994160.

The previous prime is 1263370914917. The next prime is 1263370915013. The reversal of 1263370914978 is 8794190733621.

It is a super-2 number, since 2×1263370914978² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 38393226 + ... + 38426117.

It is an arithmetic number, because the mean of its divisors is an integer number (157978980936).

Almost surely, 2^{1263370914978} is an apocalyptic number.

1263370914978 is an abundant number, since it is smaller than the sum of its proper divisors (1264292779998).

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

1263370914978 is a wasteful number, since it uses less digits than its factorization.

1263370914978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76822089.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 1263370914978 in words is "one trillion, two hundred sixty-three billion, three hundred seventy million, nine hundred fourteen thousand, nine hundred seventy-eight".