7123412543441 has 4 divisors (see below), whose sum is σ = 7186451592612. Its totient is φ = 7060373494272.

The previous prime is 7123412543393. The next prime is 7123412543447. The reversal of 7123412543441 is 1443452143217.

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 370794527041 + 6752618016400 = 608929^2 + 2598580^2 .

It is a cyclic number.

It is not a de Polignac number, because 7123412543441 - 2²² = 7123408349137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7123412543447) 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, 31519524416 + ... + 31519524641.

It is an arithmetic number, because the mean of its divisors is an integer number (1796612898153).

Almost surely, 2^{7123412543441} is an apocalyptic number.

It is an amenable number.

7123412543441 is a deficient number, since it is larger than the sum of its proper divisors (63039049171).

7123412543441 is a wasteful number, since it uses less digits than its factorization.

7123412543441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63039049170.

The product of its digits is 322560, while the sum is 41.

Adding to 7123412543441 its reverse (1443452143217), we get a palindrome (8566864686658).

The spelling of 7123412543441 in words is "seven trillion, one hundred twenty-three billion, four hundred twelve million, five hundred forty-three thousand, four hundred forty-one".