20346641551650 has 24 divisors (see below), whose sum is σ = 50459671048464. Its totient is φ = 5425771080400.

The previous prime is 20346641551633. The next prime is 20346641551657. The reversal of 20346641551650 is 5615514664302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20346641551650.

It is not an unprimeable number, because it can be changed into a prime (20346641551657) 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 11 ways as a sum of consecutive naturals, for example, 67822138356 + ... + 67822138655.

It is an arithmetic number, because the mean of its divisors is an integer number (2102486293686).

Almost surely, 2^{20346641551650} is an apocalyptic number.

20346641551650 is an abundant number, since it is smaller than the sum of its proper divisors (30113029496814).

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

20346641551650 is a wasteful number, since it uses less digits than its factorization.

20346641551650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135644277026 (or 135644277021 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 20346641551650 in words is "twenty trillion, three hundred forty-six billion, six hundred forty-one million, five hundred fifty-one thousand, six hundred fifty".