20603387237061 has 4 divisors (see below), whose sum is σ = 27471182982752. Its totient is φ = 13735591491372.

The previous prime is 20603387237051. The next prime is 20603387237063. The reversal of 20603387237061 is 16073278330602.

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 not a de Polignac number, because 20603387237061 - 2⁵ = 20603387237029 is a prime.

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 20603387237061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603387237063) 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, 3433897872841 + ... + 3433897872846.

It is an arithmetic number, because the mean of its divisors is an integer number (6867795745688).

Almost surely, 2^{20603387237061} is an apocalyptic number.

It is an amenable number.

20603387237061 is a deficient number, since it is larger than the sum of its proper divisors (6867795745691).

20603387237061 is an equidigital number, since it uses as much as digits as its factorization.

20603387237061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6867795745690.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 20603387237061 in words is "twenty trillion, six hundred three billion, three hundred eighty-seven million, two hundred thirty-seven thousand, sixty-one".