16505623770 has 16 divisors (see below), whose sum is σ = 39613497120. Its totient is φ = 4401499664.

The previous prime is 16505623763. The next prime is 16505623801. The reversal of 16505623770 is 7732650561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275093700 + ... + 275093759.

It is an arithmetic number, because the mean of its divisors is an integer number (2475843570).

Almost surely, 2^16505623770 is an apocalyptic number.

16505623770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16505623770 is an abundant number, since it is smaller than the sum of its proper divisors (23107873350).

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

16505623770 is a wasteful number, since it uses less digits than its factorization.

16505623770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550187469.

The product of its (nonzero) digits is 264600, while the sum is 42.

The spelling of 16505623770 in words is "sixteen billion, five hundred five million, six hundred twenty-three thousand, seven hundred seventy".