16451444364772 has 6 divisors (see below), whose sum is σ = 28790027638358. Its totient is φ = 8225722182384.

The previous prime is 16451444364767. The next prime is 16451444364809. The reversal of 16451444364772 is 27746344415461.

It can be written as a sum of positive squares in only one way, i.e., 14356778653156 + 2094665711616 = 3789034^2 + 1447296^2 .

It is a super-3 number, since 3×16451444364772³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2056430545593 + ... + 2056430545600.

Almost surely, 2^{16451444364772} is an apocalyptic number.

It is an amenable number.

16451444364772 is a deficient number, since it is larger than the sum of its proper divisors (12338583273586).

16451444364772 is a wasteful number, since it uses less digits than its factorization.

16451444364772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112861091197 (or 4112861091195 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 58.

The spelling of 16451444364772 in words is "sixteen trillion, four hundred fifty-one billion, four hundred forty-four million, three hundred sixty-four thousand, seven hundred seventy-two".