145204015477 has 2 divisors, whose sum is σ = 145204015478. Its totient is φ = 145204015476.

The previous prime is 145204015447. The next prime is 145204015483. The reversal of 145204015477 is 774510402541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114595113361 + 30608902116 = 338519^2 + 174954^2 .

It is a cyclic number.

It is not a de Polignac number, because 145204015477 - 2¹¹ = 145204013429 is a prime.

It is a super-2 number, since 2×145204015477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145204015417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72602007738 + 72602007739.

It is an arithmetic number, because the mean of its divisors is an integer number (72602007739).

Almost surely, 2^145204015477 is an apocalyptic number.

It is an amenable number.

145204015477 is a deficient number, since it is larger than the sum of its proper divisors (1).

145204015477 is an equidigital number, since it uses as much as digits as its factorization.

145204015477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 145204015477 in words is "one hundred forty-five billion, two hundred four million, fifteen thousand, four hundred seventy-seven".