20146287168 has 112 divisors (see below), whose sum is σ = 67687301760. Its totient is φ = 5756078592.

The previous prime is 20146287143. The next prime is 20146287193. The reversal of 20146287168 is 86178264102.

20146287168 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 628 + 7 + 16 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20146287143) and next prime (20146287193).

It is a tau number, because it is divible by the number of its divisors (112).

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, 820671 + ... + 844862.

Almost surely, 2^20146287168 is an apocalyptic number.

20146287168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20146287168 is an abundant number, since it is smaller than the sum of its proper divisors (47541014592).

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

20146287168 is a wasteful number, since it uses less digits than its factorization.

20146287168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665561 (or 1665545 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 20146287168 in words is "twenty billion, one hundred forty-six million, two hundred eighty-seven thousand, one hundred sixty-eight".