864437203453 has 2 divisors, whose sum is σ = 864437203454. Its totient is φ = 864437203452.

The previous prime is 864437203391. The next prime is 864437203507. The reversal of 864437203453 is 354302734468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 485310076164 + 379127127289 = 696642^2 + 615733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864437203453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 864437203397 and 864437203406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864437903453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432218601726 + 432218601727.

It is an arithmetic number, because the mean of its divisors is an integer number (432218601727).

Almost surely, 2^864437203453 is an apocalyptic number.

It is an amenable number.

864437203453 is a deficient number, since it is larger than the sum of its proper divisors (1).

864437203453 is an equidigital number, since it uses as much as digits as its factorization.

864437203453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 49.

The spelling of 864437203453 in words is "eight hundred sixty-four billion, four hundred thirty-seven million, two hundred three thousand, four hundred fifty-three".