51333424341987 has 16 divisors (see below), whose sum is σ = 71453589193728. Its totient is φ = 32719153389120.

The previous prime is 51333424341977. The next prime is 51333424342003. The reversal of 51333424341987 is 78914342433315.

It is not a de Polignac number, because 51333424341987 - 2¹² = 51333424337891 is a prime.

It is a super-2 number, since 2×51333424341987² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51333424341907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172624939 + ... + 172922052.

It is an arithmetic number, because the mean of its divisors is an integer number (4465849324608).

Almost surely, 2^{51333424341987} is an apocalyptic number.

51333424341987 is a deficient number, since it is larger than the sum of its proper divisors (20120164851741).

51333424341987 is a wasteful number, since it uses less digits than its factorization.

51333424341987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345549170.

The product of its digits is 26127360, while the sum is 57.

The spelling of 51333424341987 in words is "fifty-one trillion, three hundred thirty-three billion, four hundred twenty-four million, three hundred forty-one thousand, nine hundred eighty-seven".