51534045051431 has 4 divisors (see below), whose sum is σ = 51537908476200. Its totient is φ = 51530181626664.

The previous prime is 51534045051397. The next prime is 51534045051443. The reversal of 51534045051431 is 13415054043515.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51534045051431 is a prime.

It is a super-2 number, since 2×51534045051431² (a number of 28 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 (51534045051631) 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, 1931692376 + ... + 1931719053.

It is an arithmetic number, because the mean of its divisors is an integer number (12884477119050).

Almost surely, 2^{51534045051431} is an apocalyptic number.

51534045051431 is a deficient number, since it is larger than the sum of its proper divisors (3863424769).

51534045051431 is a wasteful number, since it uses less digits than its factorization.

51534045051431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863424768.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 51534045051431 its reverse (13415054043515), we get a palindrome (64949099094946).

The spelling of 51534045051431 in words is "fifty-one trillion, five hundred thirty-four billion, forty-five million, fifty-one thousand, four hundred thirty-one".