51471337358421 has 12 divisors (see below), whose sum is σ = 74431686046848. Its totient is φ = 34275363943464.

The previous prime is 51471337358407. The next prime is 51471337358423. The reversal of 51471337358421 is 12485373317415.

51471337358421 is a `hidden beast` number, since 5 + 1 + 4 + 7 + 1 + 3 + 37 + 3 + 584 + 21 = 666.

It is not a de Polignac number, because 51471337358421 - 2¹⁰ = 51471337357397 is a prime.

It is a super-2 number, since 2×51471337358421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51471337358423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3238405125 + ... + 3238421018.

It is an arithmetic number, because the mean of its divisors is an integer number (6202640503904).

Almost surely, 2^{51471337358421} is an apocalyptic number.

It is an amenable number.

51471337358421 is a deficient number, since it is larger than the sum of its proper divisors (22960348688427).

51471337358421 is a wasteful number, since it uses less digits than its factorization.

51471337358421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476827032 (or 6476827029 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 51471337358421 in words is "fifty-one trillion, four hundred seventy-one billion, three hundred thirty-seven million, three hundred fifty-eight thousand, four hundred twenty-one".