16115204620644 has 48 divisors (see below), whose sum is σ = 37780617369600. Its totient is φ = 5346263865376.

The previous prime is 16115204620583. The next prime is 16115204620661. The reversal of 16115204620644 is 44602640251161.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16115204620596 and 16115204620605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3552937 + ... + 6697295.

It is an arithmetic number, because the mean of its divisors is an integer number (787096195200).

Almost surely, 2^{16115204620644} is an apocalyptic number.

It is an amenable number.

16115204620644 is an abundant number, since it is smaller than the sum of its proper divisors (21665412748956).

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

16115204620644 is a wasteful number, since it uses less digits than its factorization.

16115204620644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146392 (or 3146390 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 16115204620644 in words is "sixteen trillion, one hundred fifteen billion, two hundred four million, six hundred twenty thousand, six hundred forty-four".