1005637422061 has 4 divisors (see below), whose sum is σ = 1005643554300. Its totient is φ = 1005631289824.

The previous prime is 1005637422037. The next prime is 1005637422067. The reversal of 1005637422061 is 1602247365001.

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 927790841961 + 77846580100 = 963219^2 + 279010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005637422061 - 2¹¹ = 1005637420013 is a prime.

It is a super-2 number, since 2×1005637422061² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005637422061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005637422067) 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, 2813176 + ... + 3150433.

It is an arithmetic number, because the mean of its divisors is an integer number (251410888575).

Almost surely, 2^{1005637422061} is an apocalyptic number.

It is an amenable number.

1005637422061 is a deficient number, since it is larger than the sum of its proper divisors (6132239).

1005637422061 is an equidigital number, since it uses as much as digits as its factorization.

1005637422061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132238.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 1005637422061 in words is "one trillion, five billion, six hundred thirty-seven million, four hundred twenty-two thousand, sixty-one".