20416152332561 has 8 divisors (see below), whose sum is σ = 20421022187520. Its totient is φ = 20411282832192.

The previous prime is 20416152332551. The next prime is 20416152332629. The reversal of 20416152332561 is 16523325161402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20416152332561 - 2¹⁰ = 20416152331537 is a prime.

It is a super-2 number, since 2×20416152332561² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20416152332551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141125081 + ... + 141269673.

It is an arithmetic number, because the mean of its divisors is an integer number (2552627773440).

Almost surely, 2^{20416152332561} is an apocalyptic number.

It is an amenable number.

20416152332561 is a deficient number, since it is larger than the sum of its proper divisors (4869854959).

20416152332561 is a wasteful number, since it uses less digits than its factorization.

20416152332561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177295.

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 20416152332561 its reverse (16523325161402), we get a palindrome (36939477493963).

The spelling of 20416152332561 in words is "twenty trillion, four hundred sixteen billion, one hundred fifty-two million, three hundred thirty-two thousand, five hundred sixty-one".