66312461061 has 48 divisors (see below), whose sum is σ = 119576096640. Its totient is φ = 34402959360.

The previous prime is 66312461053. The next prime is 66312461071. The reversal of 66312461061 is 16016421366.

It is a happy number.

66312461061 is a `hidden beast` number, since 6 + 6 + 31 + 2 + 4 + 610 + 6 + 1 = 666.

It is not a de Polignac number, because 66312461061 - 2³ = 66312461053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66312461071) 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 in 47 ways as a sum of consecutive naturals, for example, 470701 + ... + 595133.

It is an arithmetic number, because the mean of its divisors is an integer number (2491168680).

Almost surely, 2^66312461061 is an apocalyptic number.

It is an amenable number.

66312461061 is a deficient number, since it is larger than the sum of its proper divisors (53263635579).

66312461061 is a wasteful number, since it uses less digits than its factorization.

66312461061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125226 (or 125223 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 66312461061 in words is "sixty-six billion, three hundred twelve million, four hundred sixty-one thousand, sixty-one".