13400364977 has 2 divisors, whose sum is σ = 13400364978. Its totient is φ = 13400364976.

The previous prime is 13400364959. The next prime is 13400365001. The reversal of 13400364977 is 77946300431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9355532176 + 4044832801 = 96724^2 + 63599^2 .

It is a cyclic number.

It is not a de Polignac number, because 13400364977 - 2¹² = 13400360881 is a prime.

It is not a weakly prime, because it can be changed into another prime (13400364907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700182488 + 6700182489.

It is an arithmetic number, because the mean of its divisors is an integer number (6700182489).

Almost surely, 2^13400364977 is an apocalyptic number.

It is an amenable number.

13400364977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400364977 is an equidigital number, since it uses as much as digits as its factorization.

13400364977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 13400364977 in words is "thirteen billion, four hundred million, three hundred sixty-four thousand, nine hundred seventy-seven".