16451506645626 has 32 divisors (see below), whose sum is σ = 35933084949888. Its totient is φ = 4990706239680.

The previous prime is 16451506645601. The next prime is 16451506645633. The reversal of 16451506645626 is 62654660515461.

It is a happy number.

It is a super-2 number, since 2×16451506645626² (a number of 27 digits) contains 22 as substring.

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, 1485323701 + ... + 1485334776.

It is an arithmetic number, because the mean of its divisors is an integer number (1122908904684).

Almost surely, 2^{16451506645626} is an apocalyptic number.

16451506645626 is an abundant number, since it is smaller than the sum of its proper divisors (19481578304262).

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

16451506645626 is a wasteful number, since it uses less digits than its factorization.

16451506645626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970658566.

The product of its (nonzero) digits is 31104000, while the sum is 57.

The spelling of 16451506645626 in words is "sixteen trillion, four hundred fifty-one billion, five hundred six million, six hundred forty-five thousand, six hundred twenty-six".