1273652917680 has 320 divisors, whose sum is σ = 4707831679488. Its totient is φ = 280758804480.

The previous prime is 1273652917643. The next prime is 1273652917711. The reversal of 1273652917680 is 867192563721.

It is a self number, because there is not a number n which added to its sum of digits gives 1273652917680.

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 63 ways as a sum of consecutive naturals, for example, 2022492 + ... + 2576388.

Almost surely, 2^{1273652917680} is an apocalyptic number.

1273652917680 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 1273652917680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2353915839744).

1273652917680 is an abundant number, since it is smaller than the sum of its proper divisors (3434178761808).

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

1273652917680 is a wasteful number, since it uses less digits than its factorization.

1273652917680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554004 (or 553998 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 1273652917680 in words is "one trillion, two hundred seventy-three billion, six hundred fifty-two million, nine hundred seventeen thousand, six hundred eighty".