20487475837 has 8 divisors (see below), whose sum is σ = 21433201920. Its totient is φ = 19546330320.

The previous prime is 20487475817. The next prime is 20487475849. The reversal of 20487475837 is 73857478402.

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 20487475837 - 2¹⁵ = 20487443069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20487475817) 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, 1135989 + ... + 1153882.

It is an arithmetic number, because the mean of its divisors is an integer number (2679150240).

Almost surely, 2^20487475837 is an apocalyptic number.

It is an amenable number.

20487475837 is a deficient number, since it is larger than the sum of its proper divisors (945726083).

20487475837 is a wasteful number, since it uses less digits than its factorization.

20487475837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290283.

The product of its (nonzero) digits is 10536960, while the sum is 55.

The spelling of 20487475837 in words is "twenty billion, four hundred eighty-seven million, four hundred seventy-five thousand, eight hundred thirty-seven".