53671541773621 has 4 divisors (see below), whose sum is σ = 53671931312544. Its totient is φ = 53671152234700.

The previous prime is 53671541773613. The next prime is 53671541773679. The reversal of 53671541773621 is 12637714517635.

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 53671541773621 - 2³ = 53671541773613 is a prime.

It is a super-2 number, since 2×53671541773621² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53671541773021) 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, 194562715 + ... + 194838376.

It is an arithmetic number, because the mean of its divisors is an integer number (13417982828136).

Almost surely, 2^{53671541773621} is an apocalyptic number.

It is an amenable number.

53671541773621 is a deficient number, since it is larger than the sum of its proper divisors (389538923).

53671541773621 is a wasteful number, since it uses less digits than its factorization.

53671541773621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389538922.

The product of its digits is 22226400, while the sum is 58.

The spelling of 53671541773621 in words is "fifty-three trillion, six hundred seventy-one billion, five hundred forty-one million, seven hundred seventy-three thousand, six hundred twenty-one".