65564777746556 has 12 divisors (see below), whose sum is σ = 125169121152600. Its totient is φ = 29802171702960.

The previous prime is 65564777746493. The next prime is 65564777746591.

65564777746556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×65564777746556² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745054292531 + ... + 745054292618.

It is an arithmetic number, because the mean of its divisors is an integer number (10430760096050).

Almost surely, 2^{65564777746556} is an apocalyptic number.

It is an amenable number.

65564777746556 is a deficient number, since it is larger than the sum of its proper divisors (59604343406044).

65564777746556 is a wasteful number, since it uses less digits than its factorization.

65564777746556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490108585164 (or 1490108585162 counting only the distinct ones).

The product of its digits is 31116960000, while the sum is 80.

The spelling of 65564777746556 in words is "sixty-five trillion, five hundred sixty-four billion, seven hundred seventy-seven million, seven hundred forty-six thousand, five hundred fifty-six".