106785765522 has 18 divisors (see below), whose sum is σ = 231372162567. Its totient is φ = 35594793036.

The previous prime is 106785765521. The next prime is 106785765539. The reversal of 106785765522 is 225567587601.

106785765522 is a `hidden beast` number, since 1 + 0 + 6 + 7 + 8 + 57 + 65 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53392882761 + 53392882761 = 231069^2 + 231069^2 .

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=231069.

It is a super-2 number, since 2×106785765522² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106785765521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1347903 + ... + 1424925.

Almost surely, 2^106785765522 is an apocalyptic number.

106785765522 is an abundant number, since it is smaller than the sum of its proper divisors (124586397045).

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

106785765522 is an frugal number, since it uses more digits than its factorization.

106785765522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154054 (or 77028 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

The spelling of 106785765522 in words is "one hundred six billion, seven hundred eighty-five million, seven hundred sixty-five thousand, five hundred twenty-two".