7761048857 has 2 divisors, whose sum is σ = 7761048858. Its totient is φ = 7761048856.

The previous prime is 7761048829. The next prime is 7761048877. The reversal of 7761048857 is 7588401677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7760905216 + 143641 = 88096^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 7761048857 - 2⁸ = 7761048601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7761048799 and 7761048808.

It is not a weakly prime, because it can be changed into another prime (7761048877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3880524428 + 3880524429.

It is an arithmetic number, because the mean of its divisors is an integer number (3880524429).

Almost surely, 2^7761048857 is an apocalyptic number.

It is an amenable number.

7761048857 is a deficient number, since it is larger than the sum of its proper divisors (1).

7761048857 is an equidigital number, since it uses as much as digits as its factorization.

7761048857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2634240, while the sum is 53.

The square root of 7761048857 is about 88096.8152489067. The cubic root of 7761048857 is about 1979.8857922256.

The spelling of 7761048857 in words is "seven billion, seven hundred sixty-one million, forty-eight thousand, eight hundred fifty-seven".