521412876847 has 2 divisors, whose sum is σ = 521412876848. Its totient is φ = 521412876846.

The previous prime is 521412876841. The next prime is 521412876893. The reversal of 521412876847 is 748678214125.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521412876847 - 2¹¹ = 521412874799 is a prime.

It is a super-2 number, since 2×521412876847² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521412876841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260706438423 + 260706438424.

It is an arithmetic number, because the mean of its divisors is an integer number (260706438424).

Almost surely, 2^521412876847 is an apocalyptic number.

521412876847 is a deficient number, since it is larger than the sum of its proper divisors (1).

521412876847 is an equidigital number, since it uses as much as digits as its factorization.

521412876847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6021120, while the sum is 55.

The spelling of 521412876847 in words is "five hundred twenty-one billion, four hundred twelve million, eight hundred seventy-six thousand, eight hundred forty-seven".