42553646501 has 4 divisors (see below), whose sum is σ = 42555433932. Its totient is φ = 42551859072.

The previous prime is 42553646491. The next prime is 42553646519. The reversal of 42553646501 is 10564635524.

It is a happy number.

42553646501 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.

It can be written as a sum of positive squares in 2 ways, for example, as 22861137601 + 19692508900 = 151199^2 + 140330^2 .

It is a cyclic number.

It is not a de Polignac number, because 42553646501 - 2⁶ = 42553646437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42553646591) 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, 857516 + ... + 905781.

It is an arithmetic number, because the mean of its divisors is an integer number (10638858483).

Almost surely, 2^42553646501 is an apocalyptic number.

It is an amenable number.

42553646501 is a deficient number, since it is larger than the sum of its proper divisors (1787431).

42553646501 is a wasteful number, since it uses less digits than its factorization.

42553646501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787430.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 42553646501 in words is "forty-two billion, five hundred fifty-three million, six hundred forty-six thousand, five hundred one".