511004520445 has 8 divisors (see below), whose sum is σ = 629778544344. Its totient is φ = 397754869824.

The previous prime is 511004520443. The next prime is 511004520461. The reversal of 511004520445 is 544025400115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 224135018041 + 286869502404 = 473429^2 + 535602^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 511004520445 - 2¹ = 511004520443 is a prime.

It is a super-2 number, since 2×511004520445² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511004520443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381093114 + ... + 1381093483.

It is an arithmetic number, because the mean of its divisors is an integer number (78722318043).

Almost surely, 2^511004520445 is an apocalyptic number.

It is an amenable number.

511004520445 is a deficient number, since it is larger than the sum of its proper divisors (118774023899).

511004520445 is a wasteful number, since it uses less digits than its factorization.

511004520445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762186639.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 511004520445 in words is "five hundred eleven billion, four million, five hundred twenty thousand, four hundred forty-five".