61182082881 has 12 divisors (see below), whose sum is σ = 88382966100. Its totient is φ = 40783972320.

The previous prime is 61182082873. The next prime is 61182082883. The reversal of 61182082881 is 18828028116.

61182082881 is a `hidden beast` number, since 611 + 8 + 2 + 0 + 8 + 28 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41176526400 + 20005556481 = 202920^2 + 141441^2 .

It is not a de Polignac number, because 61182082881 - 2³ = 61182082873 is a prime.

It is a super-2 number, since 2×61182082881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61182082883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243906 + ... + 426443.

It is an arithmetic number, because the mean of its divisors is an integer number (7365247175).

Almost surely, 2^61182082881 is an apocalyptic number.

It is an amenable number.

61182082881 is a deficient number, since it is larger than the sum of its proper divisors (27200883219).

61182082881 is a wasteful number, since it uses less digits than its factorization.

61182082881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680496 (or 680493 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 45.

The spelling of 61182082881 in words is "sixty-one billion, one hundred eighty-two million, eighty-two thousand, eight hundred eighty-one".