61220755151 has 2 divisors, whose sum is σ = 61220755152. Its totient is φ = 61220755150.

The previous prime is 61220755091. The next prime is 61220755153. The reversal of 61220755151 is 15155702216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61220755151 - 2¹⁴ = 61220738767 is a prime.

It is a super-2 number, since 2×61220755151² (a number of 22 digits) contains 22 as substring.

Together with 61220755153, 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 (61220755153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30610377575 + 30610377576.

It is an arithmetic number, because the mean of its divisors is an integer number (30610377576).

Almost surely, 2^61220755151 is an apocalyptic number.

61220755151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61220755151 is an equidigital number, since it uses as much as digits as its factorization.

61220755151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 61220755151 in words is "sixty-one billion, two hundred twenty million, seven hundred fifty-five thousand, one hundred fifty-one".