7543607641 has 2 divisors, whose sum is σ = 7543607642. Its totient is φ = 7543607640.

The previous prime is 7543607623. The next prime is 7543607657. The reversal of 7543607641 is 1467063457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4883214400 + 2660393241 = 69880^2 + 51579^2 .

It is an emirp because it is prime and its reverse (1467063457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7543607641 - 2¹³ = 7543599449 is a prime.

It is not a weakly prime, because it can be changed into another prime (7543607681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3771803820 + 3771803821.

It is an arithmetic number, because the mean of its divisors is an integer number (3771803821).

Almost surely, 2^7543607641 is an apocalyptic number.

It is an amenable number.

7543607641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7543607641 is an equidigital number, since it uses as much as digits as its factorization.

7543607641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 7543607641 is about 86853.9443030655. The cubic root of 7543607641 is about 1961.2202280403.

The spelling of 7543607641 in words is "seven billion, five hundred forty-three million, six hundred seven thousand, six hundred forty-one".