864234847203451 has 2 divisors, whose sum is σ = 864234847203452. Its totient is φ = 864234847203450.

The previous prime is 864234847203437. The next prime is 864234847203493. The reversal of 864234847203451 is 154302748432468.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864234847203451 - 2¹³ = 864234847195259 is a prime.

It is a super-2 number, since 2×864234847203451² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 864234847203451.

It is not a weakly prime, because it can be changed into another prime (864234847203421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432117423601725 + 432117423601726.

It is an arithmetic number, because the mean of its divisors is an integer number (432117423601726).

Almost surely, 2^{864234847203451} is an apocalyptic number.

864234847203451 is a deficient number, since it is larger than the sum of its proper divisors (1).

864234847203451 is an equidigital number, since it uses as much as digits as its factorization.

864234847203451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123863040, while the sum is 61.

The spelling of 864234847203451 in words is "eight hundred sixty-four trillion, two hundred thirty-four billion, eight hundred forty-seven million, two hundred three thousand, four hundred fifty-one".