20340412151 has 4 divisors (see below), whose sum is σ = 20381175000. Its totient is φ = 20299649304.

The previous prime is 20340412139. The next prime is 20340412177. The reversal of 20340412151 is 15121404302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20340412151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340412121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20380676 + ... + 20381673.

It is an arithmetic number, because the mean of its divisors is an integer number (5095293750).

Almost surely, 2^20340412151 is an apocalyptic number.

20340412151 is a deficient number, since it is larger than the sum of its proper divisors (40762849).

20340412151 is an equidigital number, since it uses as much as digits as its factorization.

20340412151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40762848.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20340412151 its reverse (15121404302), we get a palindrome (35461816453).

The spelling of 20340412151 in words is "twenty billion, three hundred forty million, four hundred twelve thousand, one hundred fifty-one".