20336495057 has 4 divisors (see below), whose sum is σ = 20370446400. Its totient is φ = 20302543716.

The previous prime is 20336495033. The next prime is 20336495087. The reversal of 20336495057 is 75059463302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20336495057 - 2¹⁶ = 20336429521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20336494999 and 20336495017.

It is not an unprimeable number, because it can be changed into a prime (20336495087) 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, 16974773 + ... + 16975970.

It is an arithmetic number, because the mean of its divisors is an integer number (5092611600).

Almost surely, 2^20336495057 is an apocalyptic number.

It is an amenable number.

20336495057 is a deficient number, since it is larger than the sum of its proper divisors (33951343).

20336495057 is an equidigital number, since it uses as much as digits as its factorization.

20336495057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33951342.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 20336495057 in words is "twenty billion, three hundred thirty-six million, four hundred ninety-five thousand, fifty-seven".