5253785974781 has 4 divisors (see below), whose sum is σ = 5258842555200. Its totient is φ = 5248729394364.

The previous prime is 5253785974691. The next prime is 5253785974793. The reversal of 5253785974781 is 1874795873525.

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 not a de Polignac number, because 5253785974781 - 2¹⁴ = 5253785958397 is a prime.

It is a super-2 number, since 2×5253785974781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5253785970781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2528288651 + ... + 2528290728.

It is an arithmetic number, because the mean of its divisors is an integer number (1314710638800).

Almost surely, 2^{5253785974781} is an apocalyptic number.

It is an amenable number.

5253785974781 is a deficient number, since it is larger than the sum of its proper divisors (5056580419).

5253785974781 is a wasteful number, since it uses less digits than its factorization.

5253785974781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056580418.

The product of its digits is 592704000, while the sum is 71.

The spelling of 5253785974781 in words is "five trillion, two hundred fifty-three billion, seven hundred eighty-five million, nine hundred seventy-four thousand, seven hundred eighty-one".