61647504134707 has 4 divisors (see below), whose sum is σ = 61647612762240. Its totient is φ = 61647395507176.

The previous prime is 61647504134701. The next prime is 61647504134731. The reversal of 61647504134707 is 70743140574616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61647504134707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61647504134701) 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, 53458003 + ... + 54599020.

It is an arithmetic number, because the mean of its divisors is an integer number (15411903190560).

Almost surely, 2^{61647504134707} is an apocalyptic number.

61647504134707 is a deficient number, since it is larger than the sum of its proper divisors (108627533).

61647504134707 is a wasteful number, since it uses less digits than its factorization.

61647504134707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108627532.

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 61647504134707 in words is "sixty-one trillion, six hundred forty-seven billion, five hundred four million, one hundred thirty-four thousand, seven hundred seven".