1273451552256 has 160 divisors (see below), whose sum is σ = 3657353914368. Its totient is φ = 391420108800.

The previous prime is 1273451552249. The next prime is 1273451552267. The reversal of 1273451552256 is 6522551543721.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19276081 + ... + 19342031.

Almost surely, 2^{1273451552256} is an apocalyptic number.

1273451552256 is a gapful number since it is divisible by the number (16) 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 1273451552256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828676957184).

1273451552256 is an abundant number, since it is smaller than the sum of its proper divisors (2383902362112).

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

1273451552256 is an equidigital number, since it uses as much as digits as its factorization.

1273451552256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66952 (or 66936 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 48.

The spelling of 1273451552256 in words is "one trillion, two hundred seventy-three billion, four hundred fifty-one million, five hundred fifty-two thousand, two hundred fifty-six".