511351632512 has 64 divisors (see below), whose sum is σ = 1201794224640. Its totient is φ = 212081310720.

The previous prime is 511351632511. The next prime is 511351632581. The reversal of 511351632512 is 215236153115.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×511351632512² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511351632511) 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, 9177143 + ... + 9232694.

It is an arithmetic number, because the mean of its divisors is an integer number (18778034760).

Almost surely, 2^511351632512 is an apocalyptic number.

It is an amenable number.

511351632512 is an abundant number, since it is smaller than the sum of its proper divisors (690442592128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511351632512 is a wasteful number, since it uses less digits than its factorization.

511351632512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18409889 (or 18409877 counting only the distinct ones).

The product of its digits is 27000, while the sum is 35.

Adding to 511351632512 its reverse (215236153115), we get a palindrome (726587785627).

The spelling of 511351632512 in words is "five hundred eleven billion, three hundred fifty-one million, six hundred thirty-two thousand, five hundred twelve".