145121532979 has 2 divisors, whose sum is σ = 145121532980. Its totient is φ = 145121532978.

The previous prime is 145121532973. The next prime is 145121532989. The reversal of 145121532979 is 979235121541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145121532979 - 2¹⁵ = 145121500211 is a prime.

It is a super-2 number, since 2×145121532979² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145121532973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72560766489 + 72560766490.

It is an arithmetic number, because the mean of its divisors is an integer number (72560766490).

Almost surely, 2^145121532979 is an apocalyptic number.

145121532979 is a deficient number, since it is larger than the sum of its proper divisors (1).

145121532979 is an equidigital number, since it uses as much as digits as its factorization.

145121532979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The spelling of 145121532979 in words is "one hundred forty-five billion, one hundred twenty-one million, five hundred thirty-two thousand, nine hundred seventy-nine".