1276420163078 has 16 divisors (see below), whose sum is σ = 1986359939280. Its totient is φ = 614427026976.

The previous prime is 1276420163071. The next prime is 1276420163087. The reversal of 1276420163078 is 8703610246721.

It is a super-3 number, since 3×1276420163078³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31690601 + ... + 31730852.

It is an arithmetic number, because the mean of its divisors is an integer number (124147496205).

Almost surely, 2^{1276420163078} is an apocalyptic number.

1276420163078 is a deficient number, since it is larger than the sum of its proper divisors (709939776202).

1276420163078 is a wasteful number, since it uses less digits than its factorization.

1276420163078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63421831.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 1276420163078 in words is "one trillion, two hundred seventy-six billion, four hundred twenty million, one hundred sixty-three thousand, seventy-eight".