61450403551 has 2 divisors, whose sum is σ = 61450403552. Its totient is φ = 61450403550.

The previous prime is 61450403491. The next prime is 61450403569. The reversal of 61450403551 is 15530405416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61450403551 - 2¹⁷ = 61450272479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61450403851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30725201775 + 30725201776.

It is an arithmetic number, because the mean of its divisors is an integer number (30725201776).

Almost surely, 2^61450403551 is an apocalyptic number.

61450403551 is a deficient number, since it is larger than the sum of its proper divisors (1).

61450403551 is an equidigital number, since it uses as much as digits as its factorization.

61450403551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 61450403551 its reverse (15530405416), we get a palindrome (76980808967).

The spelling of 61450403551 in words is "sixty-one billion, four hundred fifty million, four hundred three thousand, five hundred fifty-one".