16237222721408 has 32 divisors (see below), whose sum is σ = 34835868462360. Its totient is φ = 7494102793728.

The previous prime is 16237222721407. The next prime is 16237222721453. The reversal of 16237222721408 is 80412722273261.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16237222721407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4878971510 + ... + 4878974837.

Almost surely, 2^{16237222721408} is an apocalyptic number.

It is an amenable number.

16237222721408 is an abundant number, since it is smaller than the sum of its proper divisors (18598645740952).

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

16237222721408 is an equidigital number, since it uses as much as digits as its factorization.

16237222721408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757946374 (or 9757946362 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 47.

Adding to 16237222721408 its reverse (80412722273261), we get a palindrome (96649944994669).

The spelling of 16237222721408 in words is "sixteen trillion, two hundred thirty-seven billion, two hundred twenty-two million, seven hundred twenty-one thousand, four hundred eight".