172783054256 has 20 divisors (see below), whose sum is σ = 336899447472. Its totient is φ = 85841261376.

The previous prime is 172783054253. The next prime is 172783054277. The reversal of 172783054256 is 652450387271.

It is not an unprimeable number, because it can be changed into a prime (172783054253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34389020 + ... + 34394043.

Almost surely, 2^172783054256 is an apocalyptic number.

172783054256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172783054256 is a deficient number, since it is larger than the sum of its proper divisors (164116393216).

172783054256 is a wasteful number, since it uses less digits than its factorization.

172783054256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68783228 (or 68783222 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 172783054256 in words is "one hundred seventy-two billion, seven hundred eighty-three million, fifty-four thousand, two hundred fifty-six".