20011133771157 has 8 divisors (see below), whose sum is σ = 28085801784160. Its totient is φ = 12638610802800.

The previous prime is 20011133771137. The next prime is 20011133771203. The reversal of 20011133771157 is 75117733111002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20011133771157 - 2¹² = 20011133767061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011133771137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175536261094 + ... + 175536261207.

It is an arithmetic number, because the mean of its divisors is an integer number (3510725223020).

Almost surely, 2^{20011133771157} is an apocalyptic number.

It is an amenable number.

20011133771157 is a deficient number, since it is larger than the sum of its proper divisors (8074668013003).

20011133771157 is a wasteful number, since it uses less digits than its factorization.

20011133771157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351072522323.

The product of its (nonzero) digits is 30870, while the sum is 39.

Adding to 20011133771157 its reverse (75117733111002), we get a palindrome (95128866882159).

The spelling of 20011133771157 in words is "twenty trillion, eleven billion, one hundred thirty-three million, seven hundred seventy-one thousand, one hundred fifty-seven".