61366742361 has 12 divisors (see below), whose sum is σ = 88670328240. Its totient is φ = 40897556280.

The previous prime is 61366742357. The next prime is 61366742363. The reversal of 61366742361 is 16324766316.

61366742361 is a `hidden beast` number, since 613 + 6 + 6 + 7 + 4 + 23 + 6 + 1 = 666.

It is not a de Polignac number, because 61366742361 - 2² = 61366742357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61366742363) 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, 1105171 + ... + 1159368.

It is an arithmetic number, because the mean of its divisors is an integer number (7389194020).

Almost surely, 2^61366742361 is an apocalyptic number.

It is an amenable number.

61366742361 is a deficient number, since it is larger than the sum of its proper divisors (27303585879).

61366742361 is a wasteful number, since it uses less digits than its factorization.

61366742361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267556 (or 2267553 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The spelling of 61366742361 in words is "sixty-one billion, three hundred sixty-six million, seven hundred forty-two thousand, three hundred sixty-one".