16557377050 has 24 divisors (see below), whose sum is σ = 30906344412. Its totient is φ = 6599376000.

The previous prime is 16557377033. The next prime is 16557377051. The reversal of 16557377050 is 5077375561.

It can be written as a sum of positive squares in 6 ways, for example, as 9374306041 + 7183071009 = 96821^2 + 84753^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16557377051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 575181 + ... + 603280.

Almost surely, 2^16557377050 is an apocalyptic number.

16557377050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16557377050 is a deficient number, since it is larger than the sum of its proper divisors (14348967362).

16557377050 is a wasteful number, since it uses less digits than its factorization.

16557377050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178754 (or 1178749 counting only the distinct ones).

The product of its (nonzero) digits is 771750, while the sum is 46.

The spelling of 16557377050 in words is "sixteen billion, five hundred fifty-seven million, three hundred seventy-seven thousand, fifty".