7641572751457 has 2 divisors, whose sum is σ = 7641572751458. Its totient is φ = 7641572751456.

The previous prime is 7641572751437. The next prime is 7641572751499. The reversal of 7641572751457 is 7541572751467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6659826680896 + 981746070561 = 2580664^2 + 990831^2 .

It is a cyclic number.

It is not a de Polignac number, because 7641572751457 - 2³¹ = 7639425267809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7641572751395 and 7641572751404.

It is not a weakly prime, because it can be changed into another prime (7641572751437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820786375728 + 3820786375729.

It is an arithmetic number, because the mean of its divisors is an integer number (3820786375729).

Almost surely, 2^{7641572751457} is an apocalyptic number.

It is an amenable number.

7641572751457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7641572751457 is an equidigital number, since it uses as much as digits as its factorization.

7641572751457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57624000, while the sum is 61.

The spelling of 7641572751457 in words is "seven trillion, six hundred forty-one billion, five hundred seventy-two million, seven hundred fifty-one thousand, four hundred fifty-seven".