20700218151 has 12 divisors (see below), whose sum is σ = 29913031512. Its totient is φ = 13794276336.

The previous prime is 20700218117. The next prime is 20700218159. The reversal of 20700218151 is 15181200702.

It is not a de Polignac number, because 20700218151 - 2⁷ = 20700218023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20700218159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466701 + ... + 509126.

It is an arithmetic number, because the mean of its divisors is an integer number (2492752626).

Almost surely, 2^20700218151 is an apocalyptic number.

20700218151 is a deficient number, since it is larger than the sum of its proper divisors (9212813361).

20700218151 is a wasteful number, since it uses less digits than its factorization.

20700218151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978190 (or 978187 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

Adding to 20700218151 its reverse (15181200702), we get a palindrome (35881418853).

The spelling of 20700218151 in words is "twenty billion, seven hundred million, two hundred eighteen thousand, one hundred fifty-one".