1272823773501 has 64 divisors (see below), whose sum is σ = 1997603758080. Its totient is φ = 705835952640.

The previous prime is 1272823773443. The next prime is 1272823773563. The reversal of 1272823773501 is 1053773282721.

It is not a de Polignac number, because 1272823773501 - 2¹⁷ = 1272823642429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272823773901) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76076505 + ... + 76093233.

It is an arithmetic number, because the mean of its divisors is an integer number (31212558720).

Almost surely, 2^{1272823773501} is an apocalyptic number.

It is an amenable number.

1272823773501 is a deficient number, since it is larger than the sum of its proper divisors (724779984579).

1272823773501 is a wasteful number, since it uses less digits than its factorization.

1272823773501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17434.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 1272823773501 in words is "one trillion, two hundred seventy-two billion, eight hundred twenty-three million, seven hundred seventy-three thousand, five hundred one".