1273342667520 has 1728 divisors, whose sum is σ = 5376562716672. Its totient is φ = 251088076800.

The previous prime is 1273342667491. The next prime is 1273342667573. The reversal of 1273342667520 is 257662433721.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1273342667520.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7360362154 + ... + 7360362326.

Almost surely, 2^{1273342667520} is an apocalyptic number.

1273342667520 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 1273342667520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2688281358336).

1273342667520 is an abundant number, since it is smaller than the sum of its proper divisors (4103220049152).

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

1273342667520 is a wasteful number, since it uses less digits than its factorization.

1273342667520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 1273342667520 in words is "one trillion, two hundred seventy-three billion, three hundred forty-two million, six hundred sixty-seven thousand, five hundred twenty".