2538694166505 has 64 divisors (see below), whose sum is σ = 4667275714560. Its totient is φ = 1154275577856.

The previous prime is 2538694166501. The next prime is 2538694166521. The reversal of 2538694166505 is 5056614968352.

It is not a de Polignac number, because 2538694166505 - 2² = 2538694166501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2538694166501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113938956 + ... + 113961234.

It is an arithmetic number, because the mean of its divisors is an integer number (72926183040).

Almost surely, 2^{2538694166505} is an apocalyptic number.

It is an amenable number.

2538694166505 is a deficient number, since it is larger than the sum of its proper divisors (2128581548055).

2538694166505 is a wasteful number, since it uses less digits than its factorization.

2538694166505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28110.

The product of its (nonzero) digits is 46656000, while the sum is 60.

The spelling of 2538694166505 in words is "two trillion, five hundred thirty-eight billion, six hundred ninety-four million, one hundred sixty-six thousand, five hundred five".