1371356387161 has 4 divisors (see below), whose sum is σ = 1385494081972. Its totient is φ = 1357218692352.

The previous prime is 1371356387113. The next prime is 1371356387239. The reversal of 1371356387161 is 1617836531731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1102119932761 + 269236454400 = 1049819^2 + 518880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371356387161 - 2¹³ = 1371356378969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1371356387099 and 1371356387108.

It is not an unprimeable number, because it can be changed into a prime (1371356387101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7068847260 + ... + 7068847453.

It is an arithmetic number, because the mean of its divisors is an integer number (346373520493).

Almost surely, 2^{1371356387161} is an apocalyptic number.

It is an amenable number.

1371356387161 is a deficient number, since it is larger than the sum of its proper divisors (14137694811).

1371356387161 is an equidigital number, since it uses as much as digits as its factorization.

1371356387161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14137694810.

The product of its digits is 1905120, while the sum is 52.

The spelling of 1371356387161 in words is "one trillion, three hundred seventy-one billion, three hundred fifty-six million, three hundred eighty-seven thousand, one hundred sixty-one".