61847623745 has 4 divisors (see below), whose sum is σ = 74217148500. Its totient is φ = 49478098992.

The previous prime is 61847623711. The next prime is 61847623751. The reversal of 61847623745 is 54732674816.

61847623745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49351066801 + 12496556944 = 222151^2 + 111788^2 .

It is a cyclic number.

It is not a de Polignac number, because 61847623745 - 2¹⁰ = 61847622721 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6184762370 + ... + 6184762379.

It is an arithmetic number, because the mean of its divisors is an integer number (18554287125).

Almost surely, 2^61847623745 is an apocalyptic number.

It is an amenable number.

61847623745 is a deficient number, since it is larger than the sum of its proper divisors (12369524755).

61847623745 is a wasteful number, since it uses less digits than its factorization.

61847623745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12369524754.

The product of its digits is 6773760, while the sum is 53.

The spelling of 61847623745 in words is "sixty-one billion, eight hundred forty-seven million, six hundred twenty-three thousand, seven hundred forty-five".