51542151044 has 6 divisors (see below), whose sum is σ = 90198764334. Its totient is φ = 25771075520.

The previous prime is 51542151041. The next prime is 51542151061. The reversal of 51542151044 is 44015124515.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38863391044 + 12678760000 = 197138^2 + 112600^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51542151044.

It is not an unprimeable number, because it can be changed into a prime (51542151041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6442768877 + ... + 6442768884.

It is an arithmetic number, because the mean of its divisors is an integer number (15033127389).

Almost surely, 2^51542151044 is an apocalyptic number.

It is an amenable number.

51542151044 is a deficient number, since it is larger than the sum of its proper divisors (38656613290).

51542151044 is a wasteful number, since it uses less digits than its factorization.

51542151044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12885537765 (or 12885537763 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 51542151044 its reverse (44015124515), we get a palindrome (95557275559).

The spelling of 51542151044 in words is "fifty-one billion, five hundred forty-two million, one hundred fifty-one thousand, forty-four".