5137426361261 has 4 divisors (see below), whose sum is σ = 5407817222400. Its totient is φ = 4867035500124.

The previous prime is 5137426361257. The next prime is 5137426361269. The reversal of 5137426361261 is 1621636247315.

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 5137426361261 - 2² = 5137426361257 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 (5137426361269) 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, 135195430541 + ... + 135195430578.

It is an arithmetic number, because the mean of its divisors is an integer number (1351954305600).

Almost surely, 2^{5137426361261} is an apocalyptic number.

It is an amenable number.

5137426361261 is a deficient number, since it is larger than the sum of its proper divisors (270390861139).

5137426361261 is a wasteful number, since it uses less digits than its factorization.

5137426361261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270390861138.

The product of its digits is 1088640, while the sum is 47.

The spelling of 5137426361261 in words is "five trillion, one hundred thirty-seven billion, four hundred twenty-six million, three hundred sixty-one thousand, two hundred sixty-one".