82477278913 has 2 divisors, whose sum is σ = 82477278914. Its totient is φ = 82477278912.

The previous prime is 82477278899. The next prime is 82477278967. The reversal of 82477278913 is 31987277428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82424687409 + 52591504 = 287097^2 + 7252^2 .

It is a cyclic number.

It is not a de Polignac number, because 82477278913 - 2¹³ = 82477270721 is a prime.

It is not a weakly prime, because it can be changed into another prime (82477218913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41238639456 + 41238639457.

It is an arithmetic number, because the mean of its divisors is an integer number (41238639457).

Almost surely, 2^82477278913 is an apocalyptic number.

It is an amenable number.

82477278913 is a deficient number, since it is larger than the sum of its proper divisors (1).

82477278913 is an equidigital number, since it uses as much as digits as its factorization.

82477278913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 58.

The spelling of 82477278913 in words is "eighty-two billion, four hundred seventy-seven million, two hundred seventy-eight thousand, nine hundred thirteen".