7457817818641 has 4 divisors (see below), whose sum is σ = 7458109404400. Its totient is φ = 7457526232884.

The previous prime is 7457817818599. The next prime is 7457817818687. The reversal of 7457817818641 is 1468187187547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7457817818641 - 2¹⁷ = 7457817687569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7457817828641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145754511 + ... + 145805668.

It is an arithmetic number, because the mean of its divisors is an integer number (1864527351100).

Almost surely, 2^{7457817818641} is an apocalyptic number.

It is an amenable number.

7457817818641 is a deficient number, since it is larger than the sum of its proper divisors (291585759).

7457817818641 is a wasteful number, since it uses less digits than its factorization.

7457817818641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291585758.

The product of its digits is 84295680, while the sum is 67.

The spelling of 7457817818641 in words is "seven trillion, four hundred fifty-seven billion, eight hundred seventeen million, eight hundred eighteen thousand, six hundred forty-one".