145800511277 has 4 divisors (see below), whose sum is σ = 145802240700. Its totient is φ = 145798781856.

The previous prime is 145800511253. The next prime is 145800511309. The reversal of 145800511277 is 772115008541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 772115008541 = 1531 ⋅504320711.

It can be written as a sum of positive squares in 2 ways, for example, as 74998751881 + 70801759396 = 273859^2 + 266086^2 .

It is a cyclic number.

It is not a de Polignac number, because 145800511277 - 2¹⁰ = 145800510253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145800511247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731402 + ... + 909147.

It is an arithmetic number, because the mean of its divisors is an integer number (36450560175).

Almost surely, 2^145800511277 is an apocalyptic number.

It is an amenable number.

145800511277 is a deficient number, since it is larger than the sum of its proper divisors (1729423).

145800511277 is an equidigital number, since it uses as much as digits as its factorization.

145800511277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729422.

The product of its (nonzero) digits is 78400, while the sum is 41.

The spelling of 145800511277 in words is "one hundred forty-five billion, eight hundred million, five hundred eleven thousand, two hundred seventy-seven".