61147411573249 has 4 divisors (see below), whose sum is σ = 62008642722240. Its totient is φ = 60286180424260.

The previous prime is 61147411573229. The next prime is 61147411573289. The reversal of 61147411573249 is 94237511474116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61147411573249 - 2¹³ = 61147411565057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61147411573249.

It is not an unprimeable number, because it can be changed into a prime (61147411573229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430615574389 + ... + 430615574530.

It is an arithmetic number, because the mean of its divisors is an integer number (15502160680560).

Almost surely, 2^{61147411573249} is an apocalyptic number.

It is an amenable number.

61147411573249 is a deficient number, since it is larger than the sum of its proper divisors (861231148991).

61147411573249 is an equidigital number, since it uses as much as digits as its factorization.

61147411573249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861231148990.

The product of its digits is 5080320, while the sum is 55.

The spelling of 61147411573249 in words is "sixty-one trillion, one hundred forty-seven billion, four hundred eleven million, five hundred seventy-three thousand, two hundred forty-nine".