61433632553 has 2 divisors, whose sum is σ = 61433632554. Its totient is φ = 61433632552.

The previous prime is 61433632543. The next prime is 61433632583. The reversal of 61433632553 is 35523633416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32410080784 + 29023551769 = 180028^2 + 170363^2 .

It is a cyclic number.

It is not a de Polignac number, because 61433632553 - 2⁶ = 61433632489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61433632553.

It is not a weakly prime, because it can be changed into another prime (61433632543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30716816276 + 30716816277.

It is an arithmetic number, because the mean of its divisors is an integer number (30716816277).

Almost surely, 2^61433632553 is an apocalyptic number.

It is an amenable number.

61433632553 is a deficient number, since it is larger than the sum of its proper divisors (1).

61433632553 is an equidigital number, since it uses as much as digits as its factorization.

61433632553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 41.

The spelling of 61433632553 in words is "sixty-one billion, four hundred thirty-three million, six hundred thirty-two thousand, five hundred fifty-three".