2538873617953 has 4 divisors (see below), whose sum is σ = 2557138895920. Its totient is φ = 2520608339988.

The previous prime is 2538873617923. The next prime is 2538873618007. The reversal of 2538873617953 is 3597163788352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2538873617953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2538873617923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9132638775 + ... + 9132639052.

It is an arithmetic number, because the mean of its divisors is an integer number (639284723980).

Almost surely, 2^{2538873617953} is an apocalyptic number.

It is an amenable number.

2538873617953 is a deficient number, since it is larger than the sum of its proper divisors (18265277967).

2538873617953 is a wasteful number, since it uses less digits than its factorization.

2538873617953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18265277966.

The product of its digits is 228614400, while the sum is 67.

The spelling of 2538873617953 in words is "two trillion, five hundred thirty-eight billion, eight hundred seventy-three million, six hundred seventeen thousand, nine hundred fifty-three".