1272741501641 has 8 divisors (see below), whose sum is σ = 1318013782344. Its totient is φ = 1228256565120.

The previous prime is 1272741501587. The next prime is 1272741501671. The reversal of 1272741501641 is 1461051472721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92519997241 + 1180221504400 = 304171^2 + 1086380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272741501641 - 2¹⁰ = 1272741500617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272741501671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196832756 + ... + 196839221.

It is an arithmetic number, because the mean of its divisors is an integer number (164751722793).

Almost surely, 2^{1272741501641} is an apocalyptic number.

It is an amenable number.

1272741501641 is a deficient number, since it is larger than the sum of its proper divisors (45272280703).

1272741501641 is an equidigital number, since it uses as much as digits as its factorization.

1272741501641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393672091.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 1272741501641 in words is "one trillion, two hundred seventy-two billion, seven hundred forty-one million, five hundred one thousand, six hundred forty-one".