20345135400152 has 32 divisors (see below), whose sum is σ = 40606050870000. Its totient is φ = 9528886591488.

The previous prime is 20345135400101. The next prime is 20345135400157. The reversal of 20345135400152 is 25100453154302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345135400157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751950377 + ... + 751977432.

Almost surely, 2^{20345135400152} is an apocalyptic number.

It is an amenable number.

20345135400152 is a deficient number, since it is larger than the sum of its proper divisors (20260915469848).

20345135400152 is a wasteful number, since it uses less digits than its factorization.

20345135400152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503927923 (or 1503927919 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 20345135400152 its reverse (25100453154302), we get a palindrome (45445588554454).

The spelling of 20345135400152 in words is "twenty trillion, three hundred forty-five billion, one hundred thirty-five million, four hundred thousand, one hundred fifty-two".