65666701156 has 12 divisors (see below), whose sum is σ = 131333402368. Its totient is φ = 28142871912.

The previous prime is 65666701129. The next prime is 65666701157. The reversal of 65666701156 is 65110766656.

65666701156 is an admirable number.

It is a super-2 number, since 2×65666701156² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (65666701157) 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 in 3 ways as a sum of consecutive naturals, for example, 1172619636 + ... + 1172619691.

Almost surely, 2^65666701156 is an apocalyptic number.

It is an amenable number.

65666701156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65666701156 is a wasteful number, since it uses less digits than its factorization.

65666701156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345239338 (or 2345239336 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 65666701156 in words is "sixty-five billion, six hundred sixty-six million, seven hundred one thousand, one hundred fifty-six".