16642072528 has 40 divisors (see below), whose sum is σ = 33923219400. Its totient is φ = 7898664960.

The previous prime is 16642072493. The next prime is 16642072567. The reversal of 16642072528 is 82527024661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13454224 + 16628618304 = 3668^2 + 128952^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318553 + ... + 367096.

It is an arithmetic number, because the mean of its divisors is an integer number (848080485).

Almost surely, 2^16642072528 is an apocalyptic number.

It is an amenable number.

16642072528 is an abundant number, since it is smaller than the sum of its proper divisors (17281146872).

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

16642072528 is a wasteful number, since it uses less digits than its factorization.

16642072528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685735 (or 685729 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 16642072528 in words is "sixteen billion, six hundred forty-two million, seventy-two thousand, five hundred twenty-eight".