61347557233 has 8 divisors (see below), whose sum is σ = 61400354120. Its totient is φ = 61294786560.

The previous prime is 61347557197. The next prime is 61347557239. The reversal of 61347557233 is 33275574316.

It can be written as a sum of positive squares in 4 ways, for example, as 2508807744 + 58838749489 = 50088^2 + 242567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61347557233 - 2²¹ = 61345460081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61347557239) 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 7 ways as a sum of consecutive naturals, for example, 10019413 + ... + 10025533.

It is an arithmetic number, because the mean of its divisors is an integer number (7675044265).

Almost surely, 2^61347557233 is an apocalyptic number.

It is an amenable number.

61347557233 is a deficient number, since it is larger than the sum of its proper divisors (52796887).

61347557233 is a wasteful number, since it uses less digits than its factorization.

61347557233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13107.

The product of its digits is 1587600, while the sum is 46.

The spelling of 61347557233 in words is "sixty-one billion, three hundred forty-seven million, five hundred fifty-seven thousand, two hundred thirty-three".