20478532241 has 8 divisors (see below), whose sum is σ = 21382577664. Its totient is φ = 19575626400.

The previous prime is 20478532199. The next prime is 20478532279. The reversal of 20478532241 is 14223587402.

It is a happy number.

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 20478532241 - 2³⁴ = 3298663057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20478532195 and 20478532204.

It is not an unprimeable number, because it can be changed into a prime (20478537241) 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, 248060 + ... + 320141.

It is an arithmetic number, because the mean of its divisors is an integer number (2672822208).

Almost surely, 2^20478532241 is an apocalyptic number.

It is an amenable number.

20478532241 is a deficient number, since it is larger than the sum of its proper divisors (904045423).

20478532241 is a wasteful number, since it uses less digits than its factorization.

20478532241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569791.

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 20478532241 in words is "twenty billion, four hundred seventy-eight million, five hundred thirty-two thousand, two hundred forty-one".