53521166664147 has 16 divisors (see below), whose sum is σ = 87829606833920. Its totient is φ = 28230945053472.

The previous prime is 53521166664127. The next prime is 53521166664197. The reversal of 53521166664147 is 74146666112535.

It is a happy number.

It is not a de Polignac number, because 53521166664147 - 2⁶ = 53521166664083 is a prime.

It is a super-2 number, since 2×53521166664147² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53521166664127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98024114497 + ... + 98024115042.

It is an arithmetic number, because the mean of its divisors is an integer number (5489350427120).

Almost surely, 2^{53521166664147} is an apocalyptic number.

53521166664147 is a deficient number, since it is larger than the sum of its proper divisors (34308440169773).

53521166664147 is a wasteful number, since it uses less digits than its factorization.

53521166664147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196048229562.

The product of its digits is 21772800, while the sum is 57.

The spelling of 53521166664147 in words is "fifty-three trillion, five hundred twenty-one billion, one hundred sixty-six million, six hundred sixty-four thousand, one hundred forty-seven".