51110044561542 has 16 divisors (see below), whose sum is σ = 102346131166272. Its totient is φ = 17015674513320.

The previous prime is 51110044561447. The next prime is 51110044561571. The reversal of 51110044561542 is 24516544001115.

It is a happy number.

It is a super-2 number, since 2×51110044561542² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51110044561542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5251746528 + ... + 5251756259.

It is an arithmetic number, because the mean of its divisors is an integer number (6396633197892).

Almost surely, 2^{51110044561542} is an apocalyptic number.

51110044561542 is an abundant number, since it is smaller than the sum of its proper divisors (51236086604730).

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

51110044561542 is a wasteful number, since it uses less digits than its factorization.

51110044561542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10503503603.

The product of its (nonzero) digits is 96000, while the sum is 39.

Adding to 51110044561542 its reverse (24516544001115), we get a palindrome (75626588562657).

The spelling of 51110044561542 in words is "fifty-one trillion, one hundred ten billion, forty-four million, five hundred sixty-one thousand, five hundred forty-two".