1273678871040 has 320 divisors, whose sum is σ = 4549253829120. Its totient is φ = 337767874560.

The previous prime is 1273678870973. The next prime is 1273678871051. The reversal of 1273678871040 is 401788763721.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12459817 + ... + 12561623.

It is an arithmetic number, because the mean of its divisors is an integer number (14216418216).

Almost surely, 2^{1273678871040} is an apocalyptic number.

1273678871040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273678871040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274626914560).

1273678871040 is an abundant number, since it is smaller than the sum of its proper divisors (3275574958080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1273678871040 is a wasteful number, since it uses less digits than its factorization.

1273678871040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102020 (or 101998 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 1273678871040 in words is "one trillion, two hundred seventy-three billion, six hundred seventy-eight million, eight hundred seventy-one thousand, forty".