5275721431861 has 4 divisors (see below), whose sum is σ = 5276791345824. Its totient is φ = 5274651517900.

The previous prime is 5275721431853. The next prime is 5275721431907. The reversal of 5275721431861 is 1681341275725.

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 5275721431861 - 2³ = 5275721431853 is a prime.

It is a super-4 number, since 4×5275721431861⁴ (a number of 52 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5275721431799 and 5275721431808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5275721431831) 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, 534949585 + ... + 534959446.

It is an arithmetic number, because the mean of its divisors is an integer number (1319197836456).

Almost surely, 2^{5275721431861} is an apocalyptic number.

It is an amenable number.

5275721431861 is a deficient number, since it is larger than the sum of its proper divisors (1069913963).

5275721431861 is a wasteful number, since it uses less digits than its factorization.

5275721431861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069913962.

The product of its digits is 2822400, while the sum is 52.

The spelling of 5275721431861 in words is "five trillion, two hundred seventy-five billion, seven hundred twenty-one million, four hundred thirty-one thousand, eight hundred sixty-one".