20346536102646 has 32 divisors (see below), whose sum is σ = 43833541167360. Its totient is φ = 6259010841504.

The previous prime is 20346536102623. The next prime is 20346536102663. The reversal of 20346536102646 is 64620163564302.

It is a junction number, because it is equal to n+sod(n) for n = 20346536102595 and 20346536102604.

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, 30118066 + ... + 30786213.

It is an arithmetic number, because the mean of its divisors is an integer number (1369798161480).

Almost surely, 2^{20346536102646} is an apocalyptic number.

20346536102646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20346536102646 is an abundant number, since it is smaller than the sum of its proper divisors (23487005064714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20346536102646 is a wasteful number, since it uses less digits than its factorization.

20346536102646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60908580.

The product of its (nonzero) digits is 3732480, while the sum is 48.

Adding to 20346536102646 its reverse (64620163564302), we get a palindrome (84966699666948).

The spelling of 20346536102646 in words is "twenty trillion, three hundred forty-six billion, five hundred thirty-six million, one hundred two thousand, six hundred forty-six".