61467240181 has 2 divisors, whose sum is σ = 61467240182. Its totient is φ = 61467240180.

The previous prime is 61467240151. The next prime is 61467240239. The reversal of 61467240181 is 18104276416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53365620100 + 8101620081 = 231010^2 + 90009^2 .

It is a cyclic number.

It is not a de Polignac number, because 61467240181 - 2¹⁵ = 61467207413 is a prime.

It is a super-2 number, since 2×61467240181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61467240151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30733620090 + 30733620091.

It is an arithmetic number, because the mean of its divisors is an integer number (30733620091).

Almost surely, 2^61467240181 is an apocalyptic number.

It is an amenable number.

61467240181 is a deficient number, since it is larger than the sum of its proper divisors (1).

61467240181 is an equidigital number, since it uses as much as digits as its factorization.

61467240181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 61467240181 in words is "sixty-one billion, four hundred sixty-seven million, two hundred forty thousand, one hundred eighty-one".