61344354247 has 16 divisors (see below), whose sum is σ = 69519919104. Its totient is φ = 53624844000.

The previous prime is 61344354241. The next prime is 61344354257. The reversal of 61344354247 is 74245344316.

61344354247 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 61344354247 - 2¹⁹ = 61343829959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61344354241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519379 + ... + 626452.

It is an arithmetic number, because the mean of its divisors is an integer number (4344994944).

Almost surely, 2^61344354247 is an apocalyptic number.

61344354247 is a deficient number, since it is larger than the sum of its proper divisors (8175564857).

61344354247 is a wasteful number, since it uses less digits than its factorization.

61344354247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146030.

The product of its digits is 967680, while the sum is 43.

The spelling of 61344354247 in words is "sixty-one billion, three hundred forty-four million, three hundred fifty-four thousand, two hundred forty-seven".