1455971559397 has 2 divisors, whose sum is σ = 1455971559398. Its totient is φ = 1455971559396.

The previous prime is 1455971559373. The next prime is 1455971559437. The reversal of 1455971559397 is 7939551795541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1371519712161 + 84451847236 = 1171119^2 + 290606^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455971559397 - 2¹¹ = 1455971557349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1455971559337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727985779698 + 727985779699.

It is an arithmetic number, because the mean of its divisors is an integer number (727985779699).

Almost surely, 2^{1455971559397} is an apocalyptic number.

It is an amenable number.

1455971559397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455971559397 is an equidigital number, since it uses as much as digits as its factorization.

1455971559397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 267907500, while the sum is 70.

The spelling of 1455971559397 in words is "one trillion, four hundred fifty-five billion, nine hundred seventy-one million, five hundred fifty-nine thousand, three hundred ninety-seven".