22857909371816 has 8 divisors (see below), whose sum is σ = 42858580072170. Its totient is φ = 11428954685904.

The previous prime is 22857909371813. The next prime is 22857909371861. The reversal of 22857909371816 is 61817390975822.

It can be written as a sum of positive squares in only one way, i.e., 20997015062500 + 1860894309316 = 4582250^2 + 1364146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (22857909371813) 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 as a sum of consecutive naturals, namely, 1428619335731 + ... + 1428619335746.

Almost surely, 2^{22857909371816} is an apocalyptic number.

It is an amenable number.

22857909371816 is a deficient number, since it is larger than the sum of its proper divisors (20000670700354).

22857909371816 is a wasteful number, since it uses less digits than its factorization.

22857909371816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857238671483 (or 2857238671479 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 68.

The spelling of 22857909371816 in words is "twenty-two trillion, eight hundred fifty-seven billion, nine hundred nine million, three hundred seventy-one thousand, eight hundred sixteen".