51445151451 has 24 divisors (see below), whose sum is σ = 75344287200. Its totient is φ = 33822302976.

The previous prime is 51445151447. The next prime is 51445151467. The reversal of 51445151451 is 15415154415.

51445151451 is a `hidden beast` number, since 5 + 1 + 44 + 51 + 514 + 51 = 666.

It is not a de Polignac number, because 51445151451 - 2² = 51445151447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51445151551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75285 + ... + 329481.

It is an arithmetic number, because the mean of its divisors is an integer number (3139345300).

Almost surely, 2^51445151451 is an apocalyptic number.

51445151451 is a deficient number, since it is larger than the sum of its proper divisors (23899135749).

51445151451 is a wasteful number, since it uses less digits than its factorization.

51445151451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254515 (or 254512 counting only the distinct ones).

The product of its digits is 40000, while the sum is 36.

The spelling of 51445151451 in words is "fifty-one billion, four hundred forty-five million, one hundred fifty-one thousand, four hundred fifty-one".