53667253575661 has 4 divisors (see below), whose sum is σ = 58546094809824. Its totient is φ = 48788412341500.

The previous prime is 53667253575659. The next prime is 53667253575667. The reversal of 53667253575661 is 16657535276635.

It is a happy number.

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 53667253575661 - 2¹ = 53667253575659 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 (53667253575667) 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, 2439420617065 + ... + 2439420617086.

It is an arithmetic number, because the mean of its divisors is an integer number (14636523702456).

Almost surely, 2^{53667253575661} is an apocalyptic number.

It is an amenable number.

53667253575661 is a deficient number, since it is larger than the sum of its proper divisors (4878841234163).

53667253575661 is a wasteful number, since it uses less digits than its factorization.

53667253575661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878841234162.

The product of its digits is 714420000, while the sum is 67.

The spelling of 53667253575661 in words is "fifty-three trillion, six hundred sixty-seven billion, two hundred fifty-three million, five hundred seventy-five thousand, six hundred sixty-one".