7681310531505 has 48 divisors (see below), whose sum is σ = 14339078994240. Its totient is φ = 3781401404544.

The previous prime is 7681310531501. The next prime is 7681310531527. The reversal of 7681310531505 is 5051350131867.

7681310531505 is a `hidden beast` number, since 7 + 6 + 8 + 1 + 3 + 105 + 31 + 505 = 666.

It is not a de Polignac number, because 7681310531505 - 2² = 7681310531501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7681310531501) 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, 13543926 + ... + 14099664.

It is an arithmetic number, because the mean of its divisors is an integer number (298730812380).

Almost surely, 2^{7681310531505} is an apocalyptic number.

It is an amenable number.

7681310531505 is a deficient number, since it is larger than the sum of its proper divisors (6657768462735).

7681310531505 is a wasteful number, since it uses less digits than its factorization.

7681310531505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579390 (or 579387 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 7681310531505 in words is "seven trillion, six hundred eighty-one billion, three hundred ten million, five hundred thirty-one thousand, five hundred five".