511532220351 has 4 divisors (see below), whose sum is σ = 682042960472. Its totient is φ = 341021480232.

The previous prime is 511532220343. The next prime is 511532220359. The reversal of 511532220351 is 153022235115.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (511532220343) and next prime (511532220359).

It is not a de Polignac number, because 511532220351 - 2³ = 511532220343 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 (511532220359) 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, 85255370056 + ... + 85255370061.

It is an arithmetic number, because the mean of its divisors is an integer number (170510740118).

Almost surely, 2^511532220351 is an apocalyptic number.

511532220351 is a deficient number, since it is larger than the sum of its proper divisors (170510740121).

511532220351 is a wasteful number, since it uses less digits than its factorization.

511532220351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170510740120.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 511532220351 its reverse (153022235115), we get a palindrome (664554455466).

The spelling of 511532220351 in words is "five hundred eleven billion, five hundred thirty-two million, two hundred twenty thousand, three hundred fifty-one".