61477271239679 has 2 divisors, whose sum is σ = 61477271239680. Its totient is φ = 61477271239678.

The previous prime is 61477271239667. The next prime is 61477271239687. The reversal of 61477271239679 is 97693217277416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61477271239679 - 2⁴⁰ = 60377759611903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61477271232679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30738635619839 + 30738635619840.

It is an arithmetic number, because the mean of its divisors is an integer number (30738635619840).

Almost surely, 2^{61477271239679} is an apocalyptic number.

61477271239679 is a deficient number, since it is larger than the sum of its proper divisors (1).

61477271239679 is an equidigital number, since it uses as much as digits as its factorization.

61477271239679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336063168, while the sum is 71.

The spelling of 61477271239679 in words is "sixty-one trillion, four hundred seventy-seven billion, two hundred seventy-one million, two hundred thirty-nine thousand, six hundred seventy-nine".