5571854934781 has 4 divisors (see below), whose sum is σ = 5722445608732. Its totient is φ = 5421264260832.

The previous prime is 5571854934731. The next prime is 5571854934847. The reversal of 5571854934781 is 1874394581755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5053094872281 + 518760062500 = 2247909^2 + 720250^2 .

It is a cyclic number.

It is not a de Polignac number, because 5571854934781 - 2¹⁵ = 5571854902013 is a prime.

It is a super-2 number, since 2×5571854934781² (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 (5571854934731) 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, 75295336920 + ... + 75295336993.

It is an arithmetic number, because the mean of its divisors is an integer number (1430611402183).

Almost surely, 2^{5571854934781} is an apocalyptic number.

It is an amenable number.

5571854934781 is a deficient number, since it is larger than the sum of its proper divisors (150590673951).

5571854934781 is a wasteful number, since it uses less digits than its factorization.

5571854934781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150590673950.

The product of its digits is 169344000, while the sum is 67.

The spelling of 5571854934781 in words is "five trillion, five hundred seventy-one billion, eight hundred fifty-four million, nine hundred thirty-four thousand, seven hundred eighty-one".