51409134442 has 32 divisors (see below), whose sum is σ = 83444662080. Its totient is φ = 23671232640.

The previous prime is 51409134401. The next prime is 51409134443. The reversal of 51409134442 is 24443190415.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (51409134443) 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 15 ways as a sum of consecutive naturals, for example, 1525717 + ... + 1559047.

It is an arithmetic number, because the mean of its divisors is an integer number (2607645690).

Almost surely, 2^51409134442 is an apocalyptic number.

51409134442 is a deficient number, since it is larger than the sum of its proper divisors (32035527638).

51409134442 is a wasteful number, since it uses less digits than its factorization.

51409134442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34486.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 51409134442 in words is "fifty-one billion, four hundred nine million, one hundred thirty-four thousand, four hundred forty-two".