20156133795 has 16 divisors (see below), whose sum is σ = 36856930560. Its totient is φ = 9214232544.

The previous prime is 20156133791. The next prime is 20156133821. The reversal of 20156133795 is 59733165102.

It is not a de Polignac number, because 20156133795 - 2² = 20156133791 is a prime.

It is a super-2 number, since 2×20156133795² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20156133791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95981485 + ... + 95981694.

It is an arithmetic number, because the mean of its divisors is an integer number (2303558160).

Almost surely, 2^20156133795 is an apocalyptic number.

20156133795 is a deficient number, since it is larger than the sum of its proper divisors (16700796765).

20156133795 is a wasteful number, since it uses less digits than its factorization.

20156133795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191963194.

The product of its (nonzero) digits is 170100, while the sum is 42.

Adding to 20156133795 its reverse (59733165102), we get a palindrome (79889298897).

The spelling of 20156133795 in words is "twenty billion, one hundred fifty-six million, one hundred thirty-three thousand, seven hundred ninety-five".