51540044210 has 16 divisors (see below), whose sum is σ = 92776104000. Its totient is φ = 20615123376.

The previous prime is 51540044147. The next prime is 51540044221. The reversal of 51540044210 is 1244004515.

It is a self number, because there is not a number n which added to its sum of digits gives 51540044210.

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, 162251 + ... + 359729.

It is an arithmetic number, because the mean of its divisors is an integer number (5798506500).

Almost surely, 2^51540044210 is an apocalyptic number.

51540044210 is a deficient number, since it is larger than the sum of its proper divisors (41236059790).

51540044210 is a wasteful number, since it uses less digits than its factorization.

51540044210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223585.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 51540044210 its reverse (1244004515), we get a palindrome (52784048725).

The spelling of 51540044210 in words is "fifty-one billion, five hundred forty million, forty-four thousand, two hundred ten".