51204232461 has 8 divisors (see below), whose sum is σ = 68490433600. Its totient is φ = 34027093152.

The previous prime is 51204232433. The next prime is 51204232463. The reversal of 51204232461 is 16423240215.

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

It is not a de Polignac number, because 51204232461 - 2³⁴ = 34024363277 is a prime.

It is a super-2 number, since 2×51204232461² (a number of 22 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 (51204232463) 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, 27264361 + ... + 27266238.

It is an arithmetic number, because the mean of its divisors is an integer number (8561304200).

Almost surely, 2^51204232461 is an apocalyptic number.

It is an amenable number.

51204232461 is a deficient number, since it is larger than the sum of its proper divisors (17286201139).

51204232461 is a wasteful number, since it uses less digits than its factorization.

51204232461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54530915.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 51204232461 its reverse (16423240215), we get a palindrome (67627472676).

The spelling of 51204232461 in words is "fifty-one billion, two hundred four million, two hundred thirty-two thousand, four hundred sixty-one".