20161057152 has 32 divisors (see below), whose sum is σ = 53552809080. Its totient is φ = 6720352256.

The previous prime is 20161057151. The next prime is 20161057153. The reversal of 20161057152 is 25175016102.

It is an interprime number because it is at equal distance from previous prime (20161057151) and next prime (20161057153).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20161057152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20161057151) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 26250993 + ... + 26251760.

Almost surely, 2^20161057152 is an apocalyptic number.

It is an amenable number.

20161057152 is an abundant number, since it is smaller than the sum of its proper divisors (33391751928).

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

20161057152 is an equidigital number, since it uses as much as digits as its factorization.

20161057152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52502770 (or 52502758 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 20161057152 in words is "twenty billion, one hundred sixty-one million, fifty-seven thousand, one hundred fifty-two".