20407260105 has 24 divisors (see below), whose sum is σ = 37453325832. Its totient is φ = 10243643904.

The previous prime is 20407260101. The next prime is 20407260109. The reversal of 20407260105 is 50106270402.

It is an interprime number because it is at equal distance from previous prime (20407260101) and next prime (20407260109).

It can be written as a sum of positive squares in 4 ways, for example, as 1624009401 + 18783250704 = 40299^2 + 137052^2 .

It is not a de Polignac number, because 20407260105 - 2² = 20407260101 is a prime.

It is a super-2 number, since 2×20407260105² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20407260101) 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, 13337314 + ... + 13338843.

It is an arithmetic number, because the mean of its divisors is an integer number (1560555243).

Almost surely, 2^20407260105 is an apocalyptic number.

It is an amenable number.

20407260105 is a deficient number, since it is larger than the sum of its proper divisors (17046065727).

20407260105 is a wasteful number, since it uses less digits than its factorization.

20407260105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26676185 (or 26676182 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 20407260105 in words is "twenty billion, four hundred seven million, two hundred sixty thousand, one hundred five".