1371424252657 has 2 divisors, whose sum is σ = 1371424252658. Its totient is φ = 1371424252656.

The previous prime is 1371424252621. The next prime is 1371424252663. The reversal of 1371424252657 is 7562524241731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714288664336 + 657135588321 = 845156^2 + 810639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371424252657 - 2³¹ = 1369276769009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1371424252657.

It is not a weakly prime, because it can be changed into another prime (1371424252357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685712126328 + 685712126329.

It is an arithmetic number, because the mean of its divisors is an integer number (685712126329).

Almost surely, 2^{1371424252657} is an apocalyptic number.

It is an amenable number.

1371424252657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371424252657 is an equidigital number, since it uses as much as digits as its factorization.

1371424252657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 49.

The spelling of 1371424252657 in words is "one trillion, three hundred seventy-one billion, four hundred twenty-four million, two hundred fifty-two thousand, six hundred fifty-seven".