1276420163079 has 4 divisors (see below), whose sum is σ = 1701893550776. Its totient is φ = 850946775384.

The previous prime is 1276420163071. The next prime is 1276420163087. The reversal of 1276420163079 is 9703610246721.

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

It is an interprime number because it is at equal distance from previous prime (1276420163071) and next prime (1276420163087).

It is not a de Polignac number, because 1276420163079 - 2³ = 1276420163071 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 (1276420163071) 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, 212736693844 + ... + 212736693849.

It is an arithmetic number, because the mean of its divisors is an integer number (425473387694).

Almost surely, 2^{1276420163079} is an apocalyptic number.

1276420163079 is a deficient number, since it is larger than the sum of its proper divisors (425473387697).

1276420163079 is an equidigital number, since it uses as much as digits as its factorization.

1276420163079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425473387696.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 1276420163079 in words is "one trillion, two hundred seventy-six billion, four hundred twenty million, one hundred sixty-three thousand, seventy-nine".