7505665057 has 16 divisors (see below), whose sum is σ = 8628984000. Its totient is φ = 6456680640.

The previous prime is 7505664973. The next prime is 7505665061.

7505665057 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7505665057 - 2¹⁵ = 7505632289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7505664998 and 7505665016.

It is not an unprimeable number, because it can be changed into a prime (7505665067) 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, 162819 + ... + 203767.

It is an arithmetic number, because the mean of its divisors is an integer number (539311500).

Almost surely, 2^7505665057 is an apocalyptic number.

It is an amenable number.

7505665057 is a deficient number, since it is larger than the sum of its proper divisors (1123318943).

7505665057 is a wasteful number, since it uses less digits than its factorization.

7505665057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41856.

The product of its (nonzero) digits is 1102500, while the sum is 46.

The square root of 7505665057 is about 86635.2414263387. The cubic root of 7505665057 is about 1957.9265398446.

The spelling of 7505665057 in words is "seven billion, five hundred five million, six hundred sixty-five thousand, fifty-seven".