145520422979 has 2 divisors, whose sum is σ = 145520422980. Its totient is φ = 145520422978.

The previous prime is 145520422939. The next prime is 145520423029. The reversal of 145520422979 is 979224025541.

It is an a-pointer prime, because the next prime (145520423029) can be obtained adding 145520422979 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145520422979 is a prime.

It is not a weakly prime, because it can be changed into another prime (145520422919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72760211489 + 72760211490.

It is an arithmetic number, because the mean of its divisors is an integer number (72760211490).

Almost surely, 2^145520422979 is an apocalyptic number.

145520422979 is a deficient number, since it is larger than the sum of its proper divisors (1).

145520422979 is an equidigital number, since it uses as much as digits as its factorization.

145520422979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 145520422979 in words is "one hundred forty-five billion, five hundred twenty million, four hundred twenty-two thousand, nine hundred seventy-nine".