511253431404532 has 6 divisors (see below), whose sum is σ = 894693504957938. Its totient is φ = 255626715702264.

The previous prime is 511253431404427. The next prime is 511253431404557. The reversal of 511253431404532 is 235404134352115.

It can be written as a sum of positive squares in only one way, i.e., 297181535014116 + 214071896390416 = 17238954^2 + 14631196^2 .

It is a super-2 number, since 2×511253431404532² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63906678925563 + ... + 63906678925570.

Almost surely, 2^{511253431404532} is an apocalyptic number.

It is an amenable number.

511253431404532 is a deficient number, since it is larger than the sum of its proper divisors (383440073553406).

511253431404532 is a wasteful number, since it uses less digits than its factorization.

511253431404532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127813357851137 (or 127813357851135 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 511253431404532 its reverse (235404134352115), we get a palindrome (746657565756647).

The spelling of 511253431404532 in words is "five hundred eleven trillion, two hundred fifty-three billion, four hundred thirty-one million, four hundred four thousand, five hundred thirty-two".