7766461307057 has 4 divisors (see below), whose sum is σ = 8223311972196. Its totient is φ = 7309610641920.

The previous prime is 7766461307009. The next prime is 7766461307063. The reversal of 7766461307057 is 7507031646677.

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 6889974015376 + 876487291681 = 2624876^2 + 936209^2 .

It is a cyclic number.

It is not a de Polignac number, because 7766461307057 - 2¹² = 7766461302961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7766461306987 and 7766461307005.

It is not an unprimeable number, because it can be changed into a prime (7766461307357) 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, 228425332544 + ... + 228425332577.

It is an arithmetic number, because the mean of its divisors is an integer number (2055827993049).

Almost surely, 2^{7766461307057} is an apocalyptic number.

It is an amenable number.

7766461307057 is a deficient number, since it is larger than the sum of its proper divisors (456850665139).

7766461307057 is a wasteful number, since it uses less digits than its factorization.

7766461307057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456850665138.

The product of its (nonzero) digits is 31116960, while the sum is 59.

The spelling of 7766461307057 in words is "seven trillion, seven hundred sixty-six billion, four hundred sixty-one million, three hundred seven thousand, fifty-seven".