8749406320537 has 4 divisors (see below), whose sum is σ = 8750711624320. Its totient is φ = 8748101016756.

The previous prime is 8749406320469. The next prime is 8749406320549. The reversal of 8749406320537 is 7350236049478.

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 a de Polignac number, because none of the positive numbers 2^k-8749406320537 is a prime.

It is a super-2 number, since 2×8749406320537² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8749406330537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652641837 + ... + 652655242.

It is an arithmetic number, because the mean of its divisors is an integer number (2187677906080).

Almost surely, 2^{8749406320537} is an apocalyptic number.

It is an amenable number.

8749406320537 is a deficient number, since it is larger than the sum of its proper divisors (1305303783).

8749406320537 is a wasteful number, since it uses less digits than its factorization.

8749406320537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305303782.

The product of its (nonzero) digits is 30481920, while the sum is 58.

The spelling of 8749406320537 in words is "eight trillion, seven hundred forty-nine billion, four hundred six million, three hundred twenty thousand, five hundred thirty-seven".