61156338263 has 2 divisors, whose sum is σ = 61156338264. Its totient is φ = 61156338262.

The previous prime is 61156338251. The next prime is 61156338311. The reversal of 61156338263 is 36283365116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61156338263 - 2¹⁴ = 61156321879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61156938263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30578169131 + 30578169132.

It is an arithmetic number, because the mean of its divisors is an integer number (30578169132).

Almost surely, 2^61156338263 is an apocalyptic number.

61156338263 is a deficient number, since it is larger than the sum of its proper divisors (1).

61156338263 is an equidigital number, since it uses as much as digits as its factorization.

61156338263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 44.

The spelling of 61156338263 in words is "sixty-one billion, one hundred fifty-six million, three hundred thirty-eight thousand, two hundred sixty-three".