61367876321 has 2 divisors, whose sum is σ = 61367876322. Its totient is φ = 61367876320.

The previous prime is 61367876279. The next prime is 61367876341. The reversal of 61367876321 is 12367876316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56626865296 + 4741011025 = 237964^2 + 68855^2 .

It is a cyclic number.

It is not a de Polignac number, because 61367876321 - 2⁶ = 61367876257 is a prime.

It is a super-3 number, since 3×61367876321³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61367876321.

It is not a weakly prime, because it can be changed into another prime (61367876341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30683938160 + 30683938161.

It is an arithmetic number, because the mean of its divisors is an integer number (30683938161).

Almost surely, 2^61367876321 is an apocalyptic number.

It is an amenable number.

61367876321 is a deficient number, since it is larger than the sum of its proper divisors (1).

61367876321 is an equidigital number, since it uses as much as digits as its factorization.

61367876321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 50.

The spelling of 61367876321 in words is "sixty-one billion, three hundred sixty-seven million, eight hundred seventy-six thousand, three hundred twenty-one".