51435406532 has 12 divisors (see below), whose sum is σ = 93115822380. Its totient is φ = 24830885856.

The previous prime is 51435406513. The next prime is 51435406541. The reversal of 51435406532 is 23560453415.

It can be written as a sum of positive squares in 2 ways, for example, as 10119152836 + 41316253696 = 100594^2 + 203264^2 .

It is a super-2 number, since 2×51435406532² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221704223 + ... + 221704454.

It is an arithmetic number, because the mean of its divisors is an integer number (7759651865).

Almost surely, 2^51435406532 is an apocalyptic number.

It is an amenable number.

51435406532 is a deficient number, since it is larger than the sum of its proper divisors (41680415848).

51435406532 is a wasteful number, since it uses less digits than its factorization.

51435406532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443408710 (or 443408708 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 51435406532 its reverse (23560453415), we get a palindrome (74995859947).

The spelling of 51435406532 in words is "fifty-one billion, four hundred thirty-five million, four hundred six thousand, five hundred thirty-two".