78298306433 has 2 divisors, whose sum is σ = 78298306434. Its totient is φ = 78298306432.

The previous prime is 78298306423. The next prime is 78298306511. The reversal of 78298306433 is 33460389287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66158012944 + 12140293489 = 257212^2 + 110183^2 .

It is a cyclic number.

It is not a de Polignac number, because 78298306433 - 2¹⁰ = 78298305409 is a prime.

It is a super-2 number, since 2×78298306433² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78298306423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39149153216 + 39149153217.

It is an arithmetic number, because the mean of its divisors is an integer number (39149153217).

Almost surely, 2^78298306433 is an apocalyptic number.

It is an amenable number.

78298306433 is a deficient number, since it is larger than the sum of its proper divisors (1).

78298306433 is an equidigital number, since it uses as much as digits as its factorization.

78298306433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 78298306433 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred six thousand, four hundred thirty-three".