20102436495 has 16 divisors (see below), whose sum is σ = 35737665120. Its totient is φ = 10721299392.

The previous prime is 20102436493. The next prime is 20102436499. The reversal of 20102436495 is 59463420102.

It is a happy number.

20102436495 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 2 + 4 + 3 + 649 + 5 = 666.

It is not a de Polignac number, because 20102436495 - 2¹ = 20102436493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102436493) 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 15 ways as a sum of consecutive naturals, for example, 74453334 + ... + 74453603.

It is an arithmetic number, because the mean of its divisors is an integer number (2233604070).

Almost surely, 2^20102436495 is an apocalyptic number.

20102436495 is a deficient number, since it is larger than the sum of its proper divisors (15635228625).

20102436495 is a wasteful number, since it uses less digits than its factorization.

20102436495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148906951 (or 148906945 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 20102436495 its reverse (59463420102), we get a palindrome (79565856597).

The spelling of 20102436495 in words is "twenty billion, one hundred two million, four hundred thirty-six thousand, four hundred ninety-five".