77724066141 has 6 divisors (see below), whose sum is σ = 112268095550. Its totient is φ = 51816044088.

The previous prime is 77724066131. The next prime is 77724066157. The reversal of 77724066141 is 14166042777.

77724066141 is a `hidden beast` number, since 7 + 7 + 7 + 24 + 0 + 6 + 614 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51424632900 + 26299433241 = 226770^2 + 162171^2 .

It is not a de Polignac number, because 77724066141 - 2¹³ = 77724057949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77724066131) 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 5 ways as a sum of consecutive naturals, for example, 4318003666 + ... + 4318003683.

Almost surely, 2^77724066141 is an apocalyptic number.

It is an amenable number.

77724066141 is a deficient number, since it is larger than the sum of its proper divisors (34544029409).

77724066141 is a wasteful number, since it uses less digits than its factorization.

77724066141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8636007355 (or 8636007352 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 77724066141 in words is "seventy-seven billion, seven hundred twenty-four million, sixty-six thousand, one hundred forty-one".