15400312680377 has 2 divisors, whose sum is σ = 15400312680378. Its totient is φ = 15400312680376.

The previous prime is 15400312680353. The next prime is 15400312680413. The reversal of 15400312680377 is 77308621300451.

It is a happy number.

15400312680377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14672048428921 + 728264251456 = 3830411^2 + 853384^2 .

It is an emirp because it is prime and its reverse (77308621300451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15400312680377 - 2¹⁸ = 15400312418233 is a prime.

It is not a weakly prime, because it can be changed into another prime (15400312680307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7700156340188 + 7700156340189.

It is an arithmetic number, because the mean of its divisors is an integer number (7700156340189).

Almost surely, 2^{15400312680377} is an apocalyptic number.

It is an amenable number.

15400312680377 is a deficient number, since it is larger than the sum of its proper divisors (1).

15400312680377 is an equidigital number, since it uses as much as digits as its factorization.

15400312680377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 15400312680377 in words is "fifteen trillion, four hundred billion, three hundred twelve million, six hundred eighty thousand, three hundred seventy-seven".