20452532445461 has 8 divisors (see below), whose sum is σ = 21366502755840. Its totient is φ = 19540622949232.

The previous prime is 20452532445391. The next prime is 20452532445469. The reversal of 20452532445461 is 16454423525402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20452532445461 is a prime.

It is a super-3 number, since 3×20452532445461³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452532445469) 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, 515183246 + ... + 515222943.

It is an arithmetic number, because the mean of its divisors is an integer number (2670812844480).

Almost surely, 2^{20452532445461} is an apocalyptic number.

It is an amenable number.

20452532445461 is a deficient number, since it is larger than the sum of its proper divisors (913970310379).

20452532445461 is a wasteful number, since it uses less digits than its factorization.

20452532445461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030407075.

The product of its (nonzero) digits is 4608000, while the sum is 47.

The spelling of 20452532445461 in words is "twenty trillion, four hundred fifty-two billion, five hundred thirty-two million, four hundred forty-five thousand, four hundred sixty-one".