61010550551 has 2 divisors, whose sum is σ = 61010550552. Its totient is φ = 61010550550.

The previous prime is 61010550509. The next prime is 61010550553. The reversal of 61010550551 is 15505501016.

It is a happy number.

61010550551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61010550551 - 2¹⁸ = 61010288407 is a prime.

It is a super-2 number, since 2×61010550551² (a number of 22 digits) contains 22 as substring.

Together with 61010550553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61010550553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30505275275 + 30505275276.

It is an arithmetic number, because the mean of its divisors is an integer number (30505275276).

Almost surely, 2^61010550551 is an apocalyptic number.

61010550551 is a deficient number, since it is larger than the sum of its proper divisors (1).

61010550551 is an equidigital number, since it uses as much as digits as its factorization.

61010550551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 61010550551 in words is "sixty-one billion, ten million, five hundred fifty thousand, five hundred fifty-one".