61351129733 has 2 divisors, whose sum is σ = 61351129734. Its totient is φ = 61351129732.

The previous prime is 61351129699. The next prime is 61351129759. The reversal of 61351129733 is 33792115316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55636072129 + 5715057604 = 235873^2 + 75598^2 .

It is a cyclic number.

It is not a de Polignac number, because 61351129733 - 2¹² = 61351125637 is a prime.

It is a super-2 number, since 2×61351129733² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61351129633) 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 as a sum of consecutive naturals, namely, 30675564866 + 30675564867.

It is an arithmetic number, because the mean of its divisors is an integer number (30675564867).

Almost surely, 2^61351129733 is an apocalyptic number.

It is an amenable number.

61351129733 is a deficient number, since it is larger than the sum of its proper divisors (1).

61351129733 is an equidigital number, since it uses as much as digits as its factorization.

61351129733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 41.

The spelling of 61351129733 in words is "sixty-one billion, three hundred fifty-one million, one hundred twenty-nine thousand, seven hundred thirty-three".