1279055581367 has 4 divisors (see below), whose sum is σ = 1283090457336. Its totient is φ = 1275020705400.

The previous prime is 1279055581357. The next prime is 1279055581373. The reversal of 1279055581367 is 7631855509721.

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

It is a cyclic number.

It is not a de Polignac number, because 1279055581367 - 2²² = 1279051387063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279055581357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017437509 + ... + 2017438142.

It is an arithmetic number, because the mean of its divisors is an integer number (320772614334).

Almost surely, 2^{1279055581367} is an apocalyptic number.

1279055581367 is a deficient number, since it is larger than the sum of its proper divisors (4034875969).

1279055581367 is an equidigital number, since it uses as much as digits as its factorization.

1279055581367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034875968.

The product of its (nonzero) digits is 15876000, while the sum is 59.

The spelling of 1279055581367 in words is "one trillion, two hundred seventy-nine billion, fifty-five million, five hundred eighty-one thousand, three hundred sixty-seven".