16401712205772 has 48 divisors (see below), whose sum is σ = 42523337364480. Its totient is φ = 5467188571344.

The previous prime is 16401712205737. The next prime is 16401712205783. The reversal of 16401712205772 is 27750221710461.

It is a happy number.

16401712205772 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 1 + 71 + 2 + 2 + 0 + 577 + 2 = 666.

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, 12682813 + ... + 13916075.

It is an arithmetic number, because the mean of its divisors is an integer number (885902861760).

Almost surely, 2^{16401712205772} is an apocalyptic number.

16401712205772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16401712205772 is an abundant number, since it is smaller than the sum of its proper divisors (26121625158708).

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

16401712205772 is a wasteful number, since it uses less digits than its factorization.

16401712205772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356419 (or 1356411 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 16401712205772 in words is "sixteen trillion, four hundred one billion, seven hundred twelve million, two hundred five thousand, seven hundred seventy-two".