20717001151 has 16 divisors (see below), whose sum is σ = 26458967808. Its totient is φ = 15749380800.

The previous prime is 20717001083. The next prime is 20717001161. The reversal of 20717001151 is 15110071702.

It is a cyclic number.

It is not a de Polignac number, because 20717001151 - 2⁹ = 20717000639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20717001161) 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, 3277965 + ... + 3284278.

It is an arithmetic number, because the mean of its divisors is an integer number (1653685488).

Almost surely, 2^20717001151 is an apocalyptic number.

20717001151 is a deficient number, since it is larger than the sum of its proper divisors (5741966657).

20717001151 is a wasteful number, since it uses less digits than its factorization.

20717001151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6562302.

The product of its (nonzero) digits is 490, while the sum is 25.

Adding to 20717001151 its reverse (15110071702), we get a palindrome (35827072853).

The spelling of 20717001151 in words is "twenty billion, seven hundred seventeen million, one thousand, one hundred fifty-one".