61279888863619 has 2 divisors, whose sum is σ = 61279888863620. Its totient is φ = 61279888863618.

The previous prime is 61279888863517. The next prime is 61279888863637. The reversal of 61279888863619 is 91636888897216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61279888863619 - 2⁴⁵ = 26095516774787 is a prime.

It is a super-2 number, since 2×61279888863619² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61279888863689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30639944431809 + 30639944431810.

It is an arithmetic number, because the mean of its divisors is an integer number (30639944431810).

Almost surely, 2^{61279888863619} is an apocalyptic number.

61279888863619 is a deficient number, since it is larger than the sum of its proper divisors (1).

61279888863619 is an equidigital number, since it uses as much as digits as its factorization.

61279888863619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3009871872, while the sum is 82.

The spelling of 61279888863619 in words is "sixty-one trillion, two hundred seventy-nine billion, eight hundred eighty-eight million, eight hundred sixty-three thousand, six hundred nineteen".