61228335547 has 4 divisors (see below), whose sum is σ = 61425211536. Its totient is φ = 61031459560.

The previous prime is 61228335529. The next prime is 61228335551. The reversal of 61228335547 is 74553382216.

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

It is a cyclic number.

It is not a de Polignac number, because 61228335547 - 2²³ = 61219946939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61228335497 and 61228335506.

It is not an unprimeable number, because it can be changed into a prime (61228335527) 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, 98437528 + ... + 98438149.

It is an arithmetic number, because the mean of its divisors is an integer number (15356302884).

Almost surely, 2^61228335547 is an apocalyptic number.

61228335547 is a deficient number, since it is larger than the sum of its proper divisors (196875989).

61228335547 is a wasteful number, since it uses less digits than its factorization.

61228335547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196875988.

The product of its digits is 1209600, while the sum is 46.

The spelling of 61228335547 in words is "sixty-one billion, two hundred twenty-eight million, three hundred thirty-five thousand, five hundred forty-seven".