7645124553641 has 4 divisors (see below), whose sum is σ = 7645165641732. Its totient is φ = 7645083465552.

The previous prime is 7645124553571. The next prime is 7645124553643. The reversal of 7645124553641 is 1463554215467.

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 4817695755625 + 2827428798016 = 2194925^2 + 1681496^2 .

It is a cyclic number.

It is not a de Polignac number, because 7645124553641 - 2¹⁴ = 7645124537257 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 (7645124553643) 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, 20263670 + ... + 20637503.

It is an arithmetic number, because the mean of its divisors is an integer number (1911291410433).

Almost surely, 2^{7645124553641} is an apocalyptic number.

It is an amenable number.

7645124553641 is a deficient number, since it is larger than the sum of its proper divisors (41088091).

7645124553641 is a wasteful number, since it uses less digits than its factorization.

7645124553641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41088090.

The product of its digits is 12096000, while the sum is 53.

The spelling of 7645124553641 in words is "seven trillion, six hundred forty-five billion, one hundred twenty-four million, five hundred fifty-three thousand, six hundred forty-one".