20172010470 has 32 divisors (see below), whose sum is σ = 48568515840. Its totient is φ = 5361903840.

The previous prime is 20172010457. The next prime is 20172010519. The reversal of 20172010470 is 7401027102.

It is a self number, because there is not a number n which added to its sum of digits gives 20172010470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071700 + ... + 1090359.

It is an arithmetic number, because the mean of its divisors is an integer number (1517766120).

Almost surely, 2^20172010470 is an apocalyptic number.

20172010470 is an abundant number, since it is smaller than the sum of its proper divisors (28396505370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20172010470 is a wasteful number, since it uses less digits than its factorization.

20172010470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162380.

The product of its (nonzero) digits is 784, while the sum is 24.

Adding to 20172010470 its reverse (7401027102), we get a palindrome (27573037572).

The spelling of 20172010470 in words is "twenty billion, one hundred seventy-two million, ten thousand, four hundred seventy".