20605124151 has 12 divisors (see below), whose sum is σ = 29845866960. Its totient is φ = 13698483360.

The previous prime is 20605124101. The next prime is 20605124171. The reversal of 20605124151 is 15142150602.

20605124151 is a `hidden beast` number, since 2 + 0 + 60 + 512 + 41 + 51 = 666.

It is not a de Polignac number, because 20605124151 - 2⁶ = 20605124087 is a prime.

It is a super-2 number, since 2×20605124151² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20605124101) 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, 3185430 + ... + 3191891.

It is an arithmetic number, because the mean of its divisors is an integer number (2487155580).

Almost surely, 2^20605124151 is an apocalyptic number.

20605124151 is a deficient number, since it is larger than the sum of its proper divisors (9240742809).

20605124151 is a wasteful number, since it uses less digits than its factorization.

20605124151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377686 (or 6377683 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 20605124151 its reverse (15142150602), we get a palindrome (35747274753).

The spelling of 20605124151 in words is "twenty billion, six hundred five million, one hundred twenty-four thousand, one hundred fifty-one".