7221361062757 has 4 divisors (see below), whose sum is σ = 7223312258316. Its totient is φ = 7219409867200.

The previous prime is 7221361062749. The next prime is 7221361062761. The reversal of 7221361062757 is 7572601631227.

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 3635890053601 + 3585471009156 = 1906801^2 + 1893534^2 .

It is a cyclic number.

It is not a de Polignac number, because 7221361062757 - 2³ = 7221361062749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7221361062757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221361062787) 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, 975592228 + ... + 975599629.

It is an arithmetic number, because the mean of its divisors is an integer number (1805828064579).

Almost surely, 2^{7221361062757} is an apocalyptic number.

It is an amenable number.

7221361062757 is a deficient number, since it is larger than the sum of its proper divisors (1951195559).

7221361062757 is a wasteful number, since it uses less digits than its factorization.

7221361062757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951195558.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 7221361062757 in words is "seven trillion, two hundred twenty-one billion, three hundred sixty-one million, sixty-two thousand, seven hundred fifty-seven".