20130161457 has 32 divisors (see below), whose sum is σ = 32136699904. Its totient is φ = 10965715200.

The previous prime is 20130161423. The next prime is 20130161461. The reversal of 20130161457 is 75416103102.

It is not a de Polignac number, because 20130161457 - 2⁶ = 20130161393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130161417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187144 + ... + 274377.

It is an arithmetic number, because the mean of its divisors is an integer number (1004271872).

Almost surely, 2^20130161457 is an apocalyptic number.

It is an amenable number.

20130161457 is a deficient number, since it is larger than the sum of its proper divisors (12006538447).

20130161457 is a wasteful number, since it uses less digits than its factorization.

20130161457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461629.

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 20130161457 its reverse (75416103102), we get a palindrome (95546264559).

The spelling of 20130161457 in words is "twenty billion, one hundred thirty million, one hundred sixty-one thousand, four hundred fifty-seven".