20712020162 has 4 divisors (see below), whose sum is σ = 31068030246. Its totient is φ = 10356010080.

The previous prime is 20712020101. The next prime is 20712020183. The reversal of 20712020162 is 26102021702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20220555601 + 491464561 = 142199^2 + 22169^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5178005039 + ... + 5178005042.

Almost surely, 2^20712020162 is an apocalyptic number.

20712020162 is a deficient number, since it is larger than the sum of its proper divisors (10356010084).

20712020162 is a wasteful number, since it uses less digits than its factorization.

20712020162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10356010083.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 20712020162 its reverse (26102021702), we get a palindrome (46814041864).

The spelling of 20712020162 in words is "twenty billion, seven hundred twelve million, twenty thousand, one hundred sixty-two".