51147364450 has 144 divisors (see below), whose sum is σ = 123578965440. Its totient is φ = 15334842240.

The previous prime is 51147364439. The next prime is 51147364453. The reversal of 51147364450 is 5446374115.

It is a super-2 number, since 2×51147364450² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51147364453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1626981 + ... + 1658119.

It is an arithmetic number, because the mean of its divisors is an integer number (858187260).

Almost surely, 2^51147364450 is an apocalyptic number.

51147364450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51147364450 is an abundant number, since it is smaller than the sum of its proper divisors (72431600990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51147364450 is a wasteful number, since it uses less digits than its factorization.

51147364450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31209 (or 31185 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 51147364450 in words is "fifty-one billion, one hundred forty-seven million, three hundred sixty-four thousand, four hundred fifty".