20485192017 has 8 divisors (see below), whose sum is σ = 27326343424. Its totient is φ = 13650417648.

The previous prime is 20485191971. The next prime is 20485192027. The reversal of 20485192017 is 71029158402.

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

It is not a de Polignac number, because 20485192017 - 2⁶ = 20485191953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20485192027) 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, 1586758 + ... + 1599615.

It is an arithmetic number, because the mean of its divisors is an integer number (3415792928).

Almost surely, 2^20485192017 is an apocalyptic number.

It is an amenable number.

20485192017 is a deficient number, since it is larger than the sum of its proper divisors (6841151407).

20485192017 is a wasteful number, since it uses less digits than its factorization.

20485192017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188519.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 20485192017 in words is "twenty billion, four hundred eighty-five million, one hundred ninety-two thousand, seventeen".