1278552795062 has 4 divisors (see below), whose sum is σ = 1917829192596. Its totient is φ = 639276397530.

The previous prime is 1278552795059. The next prime is 1278552795071. The reversal of 1278552795062 is 2605972558721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1278552794992 and 1278552795010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319638198764 + ... + 319638198767.

It is an arithmetic number, because the mean of its divisors is an integer number (479457298149).

Almost surely, 2^{1278552795062} is an apocalyptic number.

1278552795062 is a deficient number, since it is larger than the sum of its proper divisors (639276397534).

1278552795062 is an equidigital number, since it uses as much as digits as its factorization.

1278552795062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639276397533.

The product of its (nonzero) digits is 21168000, while the sum is 59.

The spelling of 1278552795062 in words is "one trillion, two hundred seventy-eight billion, five hundred fifty-two million, seven hundred ninety-five thousand, sixty-two".