61056550157 has 2 divisors, whose sum is σ = 61056550158. Its totient is φ = 61056550156.

The previous prime is 61056550151. The next prime is 61056550171. The reversal of 61056550157 is 75105565016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36822155881 + 24234394276 = 191891^2 + 155674^2 .

It is a cyclic number.

It is not a de Polignac number, because 61056550157 - 2⁸ = 61056549901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61056550151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30528275078 + 30528275079.

It is an arithmetic number, because the mean of its divisors is an integer number (30528275079).

Almost surely, 2^61056550157 is an apocalyptic number.

It is an amenable number.

61056550157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61056550157 is an equidigital number, since it uses as much as digits as its factorization.

61056550157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 61056550157 in words is "sixty-one billion, fifty-six million, five hundred fifty thousand, one hundred fifty-seven".