20172770354 has 16 divisors (see below), whose sum is σ = 33012264096. Its totient is φ = 9168808800.

The previous prime is 20172770323. The next prime is 20172770413. The reversal of 20172770354 is 45307727102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475334 + ... + 516030.

It is an arithmetic number, because the mean of its divisors is an integer number (2063266506).

Almost surely, 2^20172770354 is an apocalyptic number.

20172770354 is a deficient number, since it is larger than the sum of its proper divisors (12839493742).

20172770354 is a wasteful number, since it uses less digits than its factorization.

20172770354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63241.

The product of its (nonzero) digits is 82320, while the sum is 38.

The spelling of 20172770354 in words is "twenty billion, one hundred seventy-two million, seven hundred seventy thousand, three hundred fifty-four".