1270440440721 has 24 divisors (see below), whose sum is σ = 1836499490280. Its totient is φ = 846305703936.

The previous prime is 1270440440681. The next prime is 1270440440743.

1270440440721 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 287844053121 + 982596387600 = 536511^2 + 991260^2 .

It is not a de Polignac number, because 1270440440721 - 2¹⁸ = 1270440178577 is a prime.

It is a super-2 number, since 2×1270440440721² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1270440440221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80414995 + ... + 80430791.

It is an arithmetic number, because the mean of its divisors is an integer number (76520812095).

Almost surely, 2^{1270440440721} is an apocalyptic number.

It is an amenable number.

1270440440721 is a deficient number, since it is larger than the sum of its proper divisors (566059049559).

1270440440721 is a wasteful number, since it uses less digits than its factorization.

1270440440721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22145 (or 22142 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The spelling of 1270440440721 in words is "one trillion, two hundred seventy billion, four hundred forty million, four hundred forty thousand, seven hundred twenty-one".