20151140005 has 16 divisors (see below), whose sum is σ = 24271797744. Its totient is φ = 16060687360.

The previous prime is 20151139933. The next prime is 20151140027. The reversal of 20151140005 is 50004115102.

It can be written as a sum of positive squares in 8 ways, for example, as 2621644804 + 17529495201 = 51202^2 + 132399^2 .

It is not a de Polignac number, because 20151140005 - 2¹¹ = 20151137957 is a prime.

It is a super-2 number, since 2×20151140005² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4266045 + ... + 4270765.

It is an arithmetic number, because the mean of its divisors is an integer number (1516987359).

Almost surely, 2^20151140005 is an apocalyptic number.

It is an amenable number.

20151140005 is a deficient number, since it is larger than the sum of its proper divisors (4120657739).

20151140005 is a wasteful number, since it uses less digits than its factorization.

20151140005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 20151140005 its reverse (50004115102), we get a palindrome (70155255107).

The spelling of 20151140005 in words is "twenty billion, one hundred fifty-one million, one hundred forty thousand, five".