20474021878547 has 8 divisors (see below), whose sum is σ = 20914232757600. Its totient is φ = 20037184263360.

The previous prime is 20474021878523. The next prime is 20474021878559. The reversal of 20474021878547 is 74587812047402.

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 20474021878547 - 2⁸ = 20474021878291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20474021878507) 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, 843303698 + ... + 843327975.

It is an arithmetic number, because the mean of its divisors is an integer number (2614279094700).

Almost surely, 2^{20474021878547} is an apocalyptic number.

20474021878547 is a deficient number, since it is larger than the sum of its proper divisors (440210879053).

20474021878547 is a wasteful number, since it uses less digits than its factorization.

20474021878547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686631933.

The product of its (nonzero) digits is 28098560, while the sum is 59.

The spelling of 20474021878547 in words is "twenty trillion, four hundred seventy-four billion, twenty-one million, eight hundred seventy-eight thousand, five hundred forty-seven".