769315461561 has 16 divisors (see below), whose sum is σ = 1139834889600. Its totient is φ = 512828248464.

The previous prime is 769315461547. The next prime is 769315461581. The reversal of 769315461561 is 165164513967.

769315461561 is a `hidden beast` number, since 7 + 6 + 9 + 3 + 15 + 4 + 61 + 561 = 666.

It is not a de Polignac number, because 769315461561 - 2⁵ = 769315461529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 769315461498 and 769315461507.

It is not an unprimeable number, because it can be changed into a prime (769315461581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062906 + ... + 1633523.

It is an arithmetic number, because the mean of its divisors is an integer number (71239680600).

Almost surely, 2^769315461561 is an apocalyptic number.

It is an amenable number.

769315461561 is a deficient number, since it is larger than the sum of its proper divisors (370519428039).

769315461561 is a wasteful number, since it uses less digits than its factorization.

769315461561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707005 (or 2706999 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 769315461561 in words is "seven hundred sixty-nine billion, three hundred fifteen million, four hundred sixty-one thousand, five hundred sixty-one".