145643379433 has 2 divisors, whose sum is σ = 145643379434. Its totient is φ = 145643379432.

The previous prime is 145643379383. The next prime is 145643379443. The reversal of 145643379433 is 334973346541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119710464064 + 25932915369 = 345992^2 + 161037^2 .

It is an emirp because it is prime and its reverse (334973346541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145643379433 - 2³⁷ = 8204425961 is a prime.

It is not a weakly prime, because it can be changed into another prime (145643379443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72821689716 + 72821689717.

It is an arithmetic number, because the mean of its divisors is an integer number (72821689717).

Almost surely, 2^145643379433 is an apocalyptic number.

It is an amenable number.

145643379433 is a deficient number, since it is larger than the sum of its proper divisors (1).

145643379433 is an equidigital number, since it uses as much as digits as its factorization.

145643379433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 52.

The spelling of 145643379433 in words is "one hundred forty-five billion, six hundred forty-three million, three hundred seventy-nine thousand, four hundred thirty-three".