7124342776721 has 8 divisors (see below), whose sum is σ = 7125482696904. Its totient is φ = 7123202974720.

The previous prime is 7124342776669. The next prime is 7124342776723. The reversal of 7124342776721 is 1276772434217.

It can be written as a sum of positive squares in 4 ways, for example, as 1594249668496 + 5530093108225 = 1262636^2 + 2351615^2 .

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 7124342776721 - 2²⁶ = 7124275667857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7124342776723) 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, 310268681 + ... + 310291641.

It is an arithmetic number, because the mean of its divisors is an integer number (890685337113).

Almost surely, 2^{7124342776721} is an apocalyptic number.

It is an amenable number.

7124342776721 is a deficient number, since it is larger than the sum of its proper divisors (1139920183).

7124342776721 is a wasteful number, since it uses less digits than its factorization.

7124342776721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59091.

The product of its digits is 5531904, while the sum is 53.

The spelling of 7124342776721 in words is "seven trillion, one hundred twenty-four billion, three hundred forty-two million, seven hundred seventy-six thousand, seven hundred twenty-one".