153561452564161 has 4 divisors (see below), whose sum is σ = 156458838461652. Its totient is φ = 150664066666672.

The previous prime is 153561452564153. The next prime is 153561452564167. The reversal of 153561452564161 is 161465254165351.

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 119293775664561 + 34267676899600 = 10922169^2 + 5853860^2 .

It is a cyclic number.

It is not a de Polignac number, because 153561452564161 - 2³ = 153561452564153 is a prime.

It is a super-2 number, since 2×153561452564161² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153561452564167) 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, 1448692948666 + ... + 1448692948771.

It is an arithmetic number, because the mean of its divisors is an integer number (39114709615413).

Almost surely, 2^{153561452564161} is an apocalyptic number.

It is an amenable number.

153561452564161 is a deficient number, since it is larger than the sum of its proper divisors (2897385897491).

153561452564161 is an equidigital number, since it uses as much as digits as its factorization.

153561452564161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897385897490.

The product of its digits is 12960000, while the sum is 55.

The spelling of 153561452564161 in words is "one hundred fifty-three trillion, five hundred sixty-one billion, four hundred fifty-two million, five hundred sixty-four thousand, one hundred sixty-one".