20438698175 has 12 divisors (see below), whose sum is σ = 28964555376. Its totient is φ = 14015107200.

The previous prime is 20438698169. The next prime is 20438698177. The reversal of 20438698175 is 57189683402.

It is not a de Polignac number, because 20438698175 - 2⁸ = 20438697919 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 (20438698177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58396106 + ... + 58396455.

It is an arithmetic number, because the mean of its divisors is an integer number (2413712948).

It is a 1-persistent number, because it is pandigital, but 2⋅20438698175 = 40877396350 is not.

Almost surely, 2^20438698175 is an apocalyptic number.

20438698175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20438698175 is a deficient number, since it is larger than the sum of its proper divisors (8525857201).

20438698175 is a wasteful number, since it uses less digits than its factorization.

20438698175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116792578 (or 116792573 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 20438698175 in words is "twenty billion, four hundred thirty-eight million, six hundred ninety-eight thousand, one hundred seventy-five".