16523221270 has 16 divisors (see below), whose sum is σ = 29743262208. Its totient is φ = 6608963200.

The previous prime is 16523221241. The next prime is 16523221271. The reversal of 16523221270 is 7212232561.

It is a super-3 number, since 3×16523221270³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16523221271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374622 + ... + 416398.

It is an arithmetic number, because the mean of its divisors is an integer number (1858953888).

Almost surely, 2^16523221270 is an apocalyptic number.

16523221270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16523221270 is a deficient number, since it is larger than the sum of its proper divisors (13220040938).

16523221270 is a wasteful number, since it uses less digits than its factorization.

16523221270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81335.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 16523221270 in words is "sixteen billion, five hundred twenty-three million, two hundred twenty-one thousand, two hundred seventy".