1263161240878 has 8 divisors (see below), whose sum is σ = 1894928070672. Its totient is φ = 631518550656.

The previous prime is 1263161240857. The next prime is 1263161240909. The reversal of 1263161240878 is 8780421613621.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31009450 + ... + 31050157.

It is an arithmetic number, because the mean of its divisors is an integer number (236866008834).

Almost surely, 2^{1263161240878} is an apocalyptic number.

1263161240878 is a deficient number, since it is larger than the sum of its proper divisors (631766829794).

1263161240878 is a wasteful number, since it uses less digits than its factorization.

1263161240878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62069786.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 1263161240878 in words is "one trillion, two hundred sixty-three billion, one hundred sixty-one million, two hundred forty thousand, eight hundred seventy-eight".