511142341445 has 4 divisors (see below), whose sum is σ = 613370809740. Its totient is φ = 408913873152.

The previous prime is 511142341441. The next prime is 511142341487. The reversal of 511142341445 is 544143241115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544143241115 = 5 ⋅108828648223.

It can be written as a sum of positive squares in 2 ways, for example, as 185693770084 + 325448571361 = 430922^2 + 570481^2 .

It is a cyclic number.

It is not a de Polignac number, because 511142341445 - 2² = 511142341441 is a prime.

It is a super-2 number, since 2×511142341445² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511142341441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51114234140 + ... + 51114234149.

It is an arithmetic number, because the mean of its divisors is an integer number (153342702435).

Almost surely, 2^511142341445 is an apocalyptic number.

It is an amenable number.

511142341445 is a deficient number, since it is larger than the sum of its proper divisors (102228468295).

511142341445 is a wasteful number, since it uses less digits than its factorization.

511142341445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102228468294.

The product of its digits is 38400, while the sum is 35.

The spelling of 511142341445 in words is "five hundred eleven billion, one hundred forty-two million, three hundred forty-one thousand, four hundred forty-five".