20732470475 has 12 divisors (see below), whose sum is σ = 26594756160. Its totient is φ = 16014045600.

The previous prime is 20732470397. The next prime is 20732470477. The reversal of 20732470475 is 57407423702.

It is not a de Polignac number, because 20732470475 - 2¹⁰ = 20732469451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20732470477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14297531 + ... + 14298980.

It is an arithmetic number, because the mean of its divisors is an integer number (2216229680).

Almost surely, 2^20732470475 is an apocalyptic number.

20732470475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20732470475 is a deficient number, since it is larger than the sum of its proper divisors (5862285685).

20732470475 is a wasteful number, since it uses less digits than its factorization.

20732470475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28596550 (or 28596545 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 41.

The spelling of 20732470475 in words is "twenty billion, seven hundred thirty-two million, four hundred seventy thousand, four hundred seventy-five".