5246666535421 has 4 divisors (see below), whose sum is σ = 5246806301500. Its totient is φ = 5246526769344.

The previous prime is 5246666535419. The next prime is 5246666535497. The reversal of 5246666535421 is 1245356666425.

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 3990361812921 + 1256304722500 = 1997589^2 + 1120850^2 .

It is a cyclic number.

It is not a de Polignac number, because 5246666535421 - 2¹ = 5246666535419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5246666530421) 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, 69826716 + ... + 69901813.

It is an arithmetic number, because the mean of its divisors is an integer number (1311701575375).

Almost surely, 2^{5246666535421} is an apocalyptic number.

It is an amenable number.

5246666535421 is a deficient number, since it is larger than the sum of its proper divisors (139766079).

5246666535421 is a wasteful number, since it uses less digits than its factorization.

5246666535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139766078.

The product of its digits is 31104000, while the sum is 55.

The spelling of 5246666535421 in words is "five trillion, two hundred forty-six billion, six hundred sixty-six million, five hundred thirty-five thousand, four hundred twenty-one".