1205522764664 has 8 divisors (see below), whose sum is σ = 2260355183760. Its totient is φ = 602761382328.

The previous prime is 1205522764661. The next prime is 1205522764669. The reversal of 1205522764664 is 4664672255021.

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

It is a super-3 number, since 3×1205522764664³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205522764661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75345172784 + ... + 75345172799.

It is an arithmetic number, because the mean of its divisors is an integer number (282544397970).

Almost surely, 2^{1205522764664} is an apocalyptic number.

It is an amenable number.

1205522764664 is a deficient number, since it is larger than the sum of its proper divisors (1054832419096).

1205522764664 is a wasteful number, since it uses less digits than its factorization.

1205522764664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150690345589 (or 150690345585 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 1205522764664 in words is "one trillion, two hundred five billion, five hundred twenty-two million, seven hundred sixty-four thousand, six hundred sixty-four".