61274340185 has 16 divisors (see below), whose sum is σ = 73896973056. Its totient is φ = 48774905088.

The previous prime is 61274340137. The next prime is 61274340191. The reversal of 61274340185 is 58104347216.

61274340185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61274340185 - 2²⁰ = 61273291609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775217 + ... + 850593.

It is an arithmetic number, because the mean of its divisors is an integer number (4618560816).

Almost surely, 2^61274340185 is an apocalyptic number.

It is an amenable number.

61274340185 is a deficient number, since it is larger than the sum of its proper divisors (12622632871).

61274340185 is a wasteful number, since it uses less digits than its factorization.

61274340185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76192.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 61274340185 in words is "sixty-one billion, two hundred seventy-four million, three hundred forty thousand, one hundred eighty-five".