7270042756409 has 4 divisors (see below), whose sum is σ = 7270123491300. Its totient is φ = 7269962021520.

The previous prime is 7270042756391. The next prime is 7270042756441. The reversal of 7270042756409 is 9046572400727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3359694704809 + 3910348051600 = 1832947^2 + 1977460^2 .

It is a cyclic number.

It is not a de Polignac number, because 7270042756409 - 2⁴⁰ = 6170531128633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7270042756609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40232222 + ... + 40412519.

It is an arithmetic number, because the mean of its divisors is an integer number (1817530872825).

Almost surely, 2^{7270042756409} is an apocalyptic number.

It is an amenable number.

7270042756409 is a deficient number, since it is larger than the sum of its proper divisors (80734891).

7270042756409 is an equidigital number, since it uses as much as digits as its factorization.

7270042756409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80734890.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 7270042756409 in words is "seven trillion, two hundred seventy billion, forty-two million, seven hundred fifty-six thousand, four hundred nine".