16505850774 has 16 divisors (see below), whose sum is σ = 37727659008. Its totient is φ = 4715957352.

The previous prime is 16505850761. The next prime is 16505850821. The reversal of 16505850774 is 47705850561.

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, 196498182 + ... + 196498265.

It is an arithmetic number, because the mean of its divisors is an integer number (2357978688).

Almost surely, 2^16505850774 is an apocalyptic number.

16505850774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16505850774 is an abundant number, since it is smaller than the sum of its proper divisors (21221808234).

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

16505850774 is a wasteful number, since it uses less digits than its factorization.

16505850774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392996459.

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 16505850774 in words is "sixteen billion, five hundred five million, eight hundred fifty thousand, seven hundred seventy-four".