86243732537 has 8 divisors (see below), whose sum is σ = 86565597000. Its totient is φ = 85922394624.

The previous prime is 86243732527. The next prime is 86243732539. The reversal of 86243732537 is 73523734268.

It can be written as a sum of positive squares in 4 ways, for example, as 2642371216 + 83601361321 = 51404^2 + 289139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86243732537 - 2¹⁰ = 86243731513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86243732539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198089 + ... + 460137.

It is an arithmetic number, because the mean of its divisors is an integer number (10820699625).

Almost surely, 2^86243732537 is an apocalyptic number.

It is an amenable number.

86243732537 is a deficient number, since it is larger than the sum of its proper divisors (321864463).

86243732537 is a wasteful number, since it uses less digits than its factorization.

86243732537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263275.

The product of its digits is 5080320, while the sum is 50.

The spelling of 86243732537 in words is "eighty-six billion, two hundred forty-three million, seven hundred thirty-two thousand, five hundred thirty-seven".