76505545603665 has 48 divisors (see below), whose sum is σ = 133659509587968. Its totient is φ = 40479939900288.

The previous prime is 76505545603661. The next prime is 76505545603673. The reversal of 76505545603665 is 56630654550567.

76505545603665 is a `hidden beast` number, since 7 + 6 + 5 + 0 + 5 + 5 + 4 + 560 + 3 + 6 + 65 = 666.

It is not a de Polignac number, because 76505545603665 - 2² = 76505545603661 is a prime.

It is a super-2 number, since 2×76505545603665² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76505545603661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139017072 + ... + 139566318.

It is an arithmetic number, because the mean of its divisors is an integer number (2784573116416).

Almost surely, 2^{76505545603665} is an apocalyptic number.

It is an amenable number.

76505545603665 is a deficient number, since it is larger than the sum of its proper divisors (57153963984303).

76505545603665 is a wasteful number, since it uses less digits than its factorization.

76505545603665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573758 (or 573755 counting only the distinct ones).

The product of its (nonzero) digits is 340200000, while the sum is 63.

The spelling of 76505545603665 in words is "seventy-six trillion, five hundred five billion, five hundred forty-five million, six hundred three thousand, six hundred sixty-five".