51534045051631 has 2 divisors, whose sum is σ = 51534045051632. Its totient is φ = 51534045051630.

The previous prime is 51534045051551. The next prime is 51534045051701. The reversal of 51534045051631 is 13615054043515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51534045051631 - 2¹¹ = 51534045049583 is a prime.

It is a super-2 number, since 2×51534045051631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51534045054631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25767022525815 + 25767022525816.

It is an arithmetic number, because the mean of its divisors is an integer number (25767022525816).

Almost surely, 2^{51534045051631} is an apocalyptic number.

51534045051631 is a deficient number, since it is larger than the sum of its proper divisors (1).

51534045051631 is an equidigital number, since it uses as much as digits as its factorization.

51534045051631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 51534045051631 in words is "fifty-one trillion, five hundred thirty-four billion, forty-five million, fifty-one thousand, six hundred thirty-one".