1361626443157 has 2 divisors, whose sum is σ = 1361626443158. Its totient is φ = 1361626443156.

The previous prime is 1361626443131. The next prime is 1361626443211. The reversal of 1361626443157 is 7513446261631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1205766509476 + 155859933681 = 1098074^2 + 394791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361626443157 - 2⁷ = 1361626443029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1361626443157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361626443857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680813221578 + 680813221579.

It is an arithmetic number, because the mean of its divisors is an integer number (680813221579).

Almost surely, 2^{1361626443157} is an apocalyptic number.

It is an amenable number.

1361626443157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361626443157 is an equidigital number, since it uses as much as digits as its factorization.

1361626443157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 49.

The spelling of 1361626443157 in words is "one trillion, three hundred sixty-one billion, six hundred twenty-six million, four hundred forty-three thousand, one hundred fifty-seven".