20162743488 has 42 divisors (see below), whose sum is σ = 57792865364. Its totient is φ = 6720914304.

The previous prime is 20162743487. The next prime is 20162743507. The reversal of 20162743488 is 88434726102.

It is a happy number.

20162743488 is a `hidden beast` number, since 2 + 0 + 162 + 7 + 4 + 3 + 488 = 666.

It is a super-2 number, since 2×20162743488² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20162743487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17501806 + ... + 17502957.

Almost surely, 2^20162743488 is an apocalyptic number.

It is an amenable number.

20162743488 is an abundant number, since it is smaller than the sum of its proper divisors (37630121876).

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

20162743488 is a wasteful number, since it uses less digits than its factorization.

20162743488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35004781 (or 35004768 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 20162743488 in words is "twenty billion, one hundred sixty-two million, seven hundred forty-three thousand, four hundred eighty-eight".