61447348733 has 4 divisors (see below), whose sum is σ = 62488829280. Its totient is φ = 60405868188.

The previous prime is 61447348693. The next prime is 61447348741. The reversal of 61447348733 is 33784374416.

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 61447348733 - 2¹⁶ = 61447283197 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 (61447348433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520740185 + ... + 520740302.

It is an arithmetic number, because the mean of its divisors is an integer number (15622207320).

Almost surely, 2^61447348733 is an apocalyptic number.

It is an amenable number.

61447348733 is a deficient number, since it is larger than the sum of its proper divisors (1041480547).

61447348733 is a wasteful number, since it uses less digits than its factorization.

61447348733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041480546.

The product of its digits is 4064256, while the sum is 50.

The spelling of 61447348733 in words is "sixty-one billion, four hundred forty-seven million, three hundred forty-eight thousand, seven hundred thirty-three".