20106785151 has 24 divisors (see below), whose sum is σ = 30053209680. Its totient is φ = 12938599296.

The previous prime is 20106785143. The next prime is 20106785201. The reversal of 20106785151 is 15158760102.

It is not a de Polignac number, because 20106785151 - 2³ = 20106785143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106785141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129915 + ... + 1147571.

It is an arithmetic number, because the mean of its divisors is an integer number (1252217070).

Almost surely, 2^20106785151 is an apocalyptic number.

20106785151 is a deficient number, since it is larger than the sum of its proper divisors (9946424529).

20106785151 is a wasteful number, since it uses less digits than its factorization.

20106785151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22055 (or 22052 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 36.

The spelling of 20106785151 in words is "twenty billion, one hundred six million, seven hundred eighty-five thousand, one hundred fifty-one".