145423050977 has 2 divisors, whose sum is σ = 145423050978. Its totient is φ = 145423050976.

The previous prime is 145423050959. The next prime is 145423051079. The reversal of 145423050977 is 779050324541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93516086416 + 51906964561 = 305804^2 + 227831^2 .

It is a cyclic number.

It is not a de Polignac number, because 145423050977 - 2¹⁰ = 145423049953 is a prime.

It is a super-2 number, since 2×145423050977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145423050917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72711525488 + 72711525489.

It is an arithmetic number, because the mean of its divisors is an integer number (72711525489).

Almost surely, 2^145423050977 is an apocalyptic number.

It is an amenable number.

145423050977 is a deficient number, since it is larger than the sum of its proper divisors (1).

145423050977 is an equidigital number, since it uses as much as digits as its factorization.

145423050977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 145423050977 in words is "one hundred forty-five billion, four hundred twenty-three million, fifty thousand, nine hundred seventy-seven".