61776271331 has 2 divisors, whose sum is σ = 61776271332. Its totient is φ = 61776271330.

The previous prime is 61776271309. The next prime is 61776271363. The reversal of 61776271331 is 13317267716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61776271331 - 2²⁶ = 61709162467 is a prime.

It is a super-2 number, since 2×61776271331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61776271031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30888135665 + 30888135666.

It is an arithmetic number, because the mean of its divisors is an integer number (30888135666).

Almost surely, 2^61776271331 is an apocalyptic number.

61776271331 is a deficient number, since it is larger than the sum of its proper divisors (1).

61776271331 is an equidigital number, since it uses as much as digits as its factorization.

61776271331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 44.

The spelling of 61776271331 in words is "sixty-one billion, seven hundred seventy-six million, two hundred seventy-one thousand, three hundred thirty-one".