42650602556621 has 4 divisors (see below), whose sum is σ = 42650615969532. Its totient is φ = 42650589143712.

The previous prime is 42650602556579. The next prime is 42650602556633. The reversal of 42650602556621 is 12665520605624.

42650602556621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1508499804100 + 41142102752521 = 1228210^2 + 6414211^2 .

It is a cyclic number.

It is not a de Polignac number, because 42650602556621 - 2¹⁴ = 42650602540237 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 42650602556621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42650602556321) 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, 1065575 + ... + 9297131.

It is an arithmetic number, because the mean of its divisors is an integer number (10662653992383).

Almost surely, 2^{42650602556621} is an apocalyptic number.

It is an amenable number.

42650602556621 is a deficient number, since it is larger than the sum of its proper divisors (13412911).

42650602556621 is an equidigital number, since it uses as much as digits as its factorization.

42650602556621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13412910.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 42650602556621 in words is "forty-two trillion, six hundred fifty billion, six hundred two million, five hundred fifty-six thousand, six hundred twenty-one".