16266266640400 has 120 divisors (see below), whose sum is σ = 44669388726144. Its totient is φ = 5576148096000.

The previous prime is 16266266640391. The next prime is 16266266640419. The reversal of 16266266640400 is 404666266261.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17899404 + ... + 18786196.

Almost surely, 2^{16266266640400} is an apocalyptic number.

16266266640400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16266266640400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22334694363072).

16266266640400 is an abundant number, since it is smaller than the sum of its proper divisors (28403122085744).

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

16266266640400 is a wasteful number, since it uses less digits than its factorization.

16266266640400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893369 (or 893358 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 49.

The spelling of 16266266640400 in words is "sixteen trillion, two hundred sixty-six billion, two hundred sixty-six million, six hundred forty thousand, four hundred".