6556245085937 has 4 divisors (see below), whose sum is σ = 6564905912436. Its totient is φ = 6547584259440.

The previous prime is 6556245085919. The next prime is 6556245085981. The reversal of 6556245085937 is 7395805426556.

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 2452869674896 + 4103375411041 = 1566164^2 + 2025679^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556245085937 - 2¹⁰ = 6556245084913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556245085237) 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, 4330412114 + ... + 4330413627.

It is an arithmetic number, because the mean of its divisors is an integer number (1641226478109).

Almost surely, 2^{6556245085937} is an apocalyptic number.

It is an amenable number.

6556245085937 is a deficient number, since it is larger than the sum of its proper divisors (8660826499).

6556245085937 is an equidigital number, since it uses as much as digits as its factorization.

6556245085937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660826498.

The product of its (nonzero) digits is 272160000, while the sum is 65.

The spelling of 6556245085937 in words is "six trillion, five hundred fifty-six billion, two hundred forty-five million, eighty-five thousand, nine hundred thirty-seven".