16403555326012 has 12 divisors (see below), whose sum is σ = 29696091538680. Its totient is φ = 7918957743536.

The previous prime is 16403555326007. The next prime is 16403555326063. The reversal of 16403555326012 is 21062355530461.

It is a self number, because there is not a number n which added to its sum of digits gives 16403555326012.

It is a congruent number.

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, 70704979738 + ... + 70704979969.

It is an arithmetic number, because the mean of its divisors is an integer number (2474674294890).

Almost surely, 2^{16403555326012} is an apocalyptic number.

It is an amenable number.

16403555326012 is a deficient number, since it is larger than the sum of its proper divisors (13292536212668).

16403555326012 is a wasteful number, since it uses less digits than its factorization.

16403555326012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141409959740 (or 141409959738 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 16403555326012 in words is "sixteen trillion, four hundred three billion, five hundred fifty-five million, three hundred twenty-six thousand, twelve".