1273158345867 has 16 divisors (see below), whose sum is σ = 1792008960000. Its totient is φ = 801795983904.

The previous prime is 1273158345859. The next prime is 1273158345889. The reversal of 1273158345867 is 7685438513721.

It is not a de Polignac number, because 1273158345867 - 2³ = 1273158345859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1273158345867.

It is not an unprimeable number, because it can be changed into a prime (1273158345167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31980267 + ... + 32020052.

It is an arithmetic number, because the mean of its divisors is an integer number (112000560000).

Almost surely, 2^{1273158345867} is an apocalyptic number.

1273158345867 is a deficient number, since it is larger than the sum of its proper divisors (518850614133).

1273158345867 is a wasteful number, since it uses less digits than its factorization.

1273158345867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64000690.

The product of its digits is 33868800, while the sum is 60.

The spelling of 1273158345867 in words is "one trillion, two hundred seventy-three billion, one hundred fifty-eight million, three hundred forty-five thousand, eight hundred sixty-seven".