20415660002364 has 96 divisors (see below), whose sum is σ = 52370224704000. Its totient is φ = 6138706984960.

The previous prime is 20415660002303. The next prime is 20415660002393. The reversal of 20415660002364 is 46320006651402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11729212 + ... + 13356860.

It is an arithmetic number, because the mean of its divisors is an integer number (545523174000).

Almost surely, 2^{20415660002364} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20415660002364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26185112352000).

20415660002364 is an abundant number, since it is smaller than the sum of its proper divisors (31954564701636).

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

20415660002364 is a wasteful number, since it uses less digits than its factorization.

20415660002364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628403 (or 1628401 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 20415660002364 its reverse (46320006651402), we get a palindrome (66735666653766).

The spelling of 20415660002364 in words is "twenty trillion, four hundred fifteen billion, six hundred sixty million, two thousand, three hundred sixty-four".