22772767698 has 18 divisors (see below), whose sum is σ = 49342383909. Its totient is φ = 7590709152.

The previous prime is 22772767657. The next prime is 22772767711. The reversal of 22772767698 is 89676727722.

22772767698 is a `hidden beast` number, since 2 + 277 + 276 + 7 + 6 + 98 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14951664729 + 7821102969 = 122277^2 + 88437^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106707.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 622458 + ... + 658026.

Almost surely, 2^22772767698 is an apocalyptic number.

22772767698 is an abundant number, since it is smaller than the sum of its proper divisors (26569616211).

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

22772767698 is an frugal number, since it uses more digits than its factorization.

22772767698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71146 (or 35574 counting only the distinct ones).

The product of its digits is 49787136, while the sum is 63.

The spelling of 22772767698 in words is "twenty-two billion, seven hundred seventy-two million, seven hundred sixty-seven thousand, six hundred ninety-eight".