1606256630637 has 4 divisors (see below), whose sum is σ = 2141675507520. Its totient is φ = 1070837753756.

The previous prime is 1606256630623. The next prime is 1606256630647. The reversal of 1606256630637 is 7360366526061.

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 1606256630637 - 2¹¹ = 1606256628589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1606256630637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606256630617) 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, 267709438437 + ... + 267709438442.

It is an arithmetic number, because the mean of its divisors is an integer number (535418876880).

Almost surely, 2^{1606256630637} is an apocalyptic number.

It is an amenable number.

1606256630637 is a deficient number, since it is larger than the sum of its proper divisors (535418876883).

1606256630637 is an equidigital number, since it uses as much as digits as its factorization.

1606256630637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535418876882.

The product of its (nonzero) digits is 4898880, while the sum is 51.

The spelling of 1606256630637 in words is "one trillion, six hundred six billion, two hundred fifty-six million, six hundred thirty thousand, six hundred thirty-seven".