7657697380505 has 4 divisors (see below), whose sum is σ = 9189236856612. Its totient is φ = 6126157904400.

The previous prime is 7657697380439. The next prime is 7657697380511. The reversal of 7657697380505 is 5050837967567.

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 1751451083776 + 5906246296729 = 1323424^2 + 2430277^2 .

It is not a de Polignac number, because 7657697380505 - 2¹⁰ = 7657697379481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765769738046 + ... + 765769738055.

It is an arithmetic number, because the mean of its divisors is an integer number (2297309214153).

Almost surely, 2^{7657697380505} is an apocalyptic number.

It is an amenable number.

7657697380505 is a deficient number, since it is larger than the sum of its proper divisors (1531539476107).

7657697380505 is a wasteful number, since it uses less digits than its factorization.

7657697380505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531539476106.

The product of its (nonzero) digits is 333396000, while the sum is 68.

The spelling of 7657697380505 in words is "seven trillion, six hundred fifty-seven billion, six hundred ninety-seven million, three hundred eighty thousand, five hundred five".