16620455023364 has 12 divisors (see below), whose sum is σ = 29108221740444. Its totient is φ = 8303820240384.

The previous prime is 16620455023331. The next prime is 16620455023391. The reversal of 16620455023364 is 46332055402661.

It can be written as a sum of positive squares in 2 ways, for example, as 14232193863364 + 2388261160000 = 3772558^2 + 1545400^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601811989 + ... + 1601822364.

It is an arithmetic number, because the mean of its divisors is an integer number (2425685145037).

Almost surely, 2^{16620455023364} is an apocalyptic number.

It is an amenable number.

16620455023364 is a deficient number, since it is larger than the sum of its proper divisors (12487766717080).

16620455023364 is a wasteful number, since it uses less digits than its factorization.

16620455023364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203635654 (or 3203635652 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 16620455023364 in words is "sixteen trillion, six hundred twenty billion, four hundred fifty-five million, twenty-three thousand, three hundred sixty-four".