20545310413506 has 8 divisors (see below), whose sum is σ = 41090620827024. Its totient is φ = 6848436804500.

The previous prime is 20545310413501. The next prime is 20545310413531. The reversal of 20545310413506 is 60531401354502.

It is a happy number.

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

20545310413506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20545310413501) 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, 1712109201120 + ... + 1712109201131.

It is an arithmetic number, because the mean of its divisors is an integer number (5136327603378).

Almost surely, 2^{20545310413506} is an apocalyptic number.

20545310413506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20545310413506 is a wasteful number, since it uses less digits than its factorization.

20545310413506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424218402256.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 20545310413506 in words is "twenty trillion, five hundred forty-five billion, three hundred ten million, four hundred thirteen thousand, five hundred six".