51205341554 has 16 divisors (see below), whose sum is σ = 80252864640. Its totient is φ = 24457313760.

The previous prime is 51205341553. The next prime is 51205341559. The reversal of 51205341554 is 45514350215.

It is not an unprimeable number, because it can be changed into a prime (51205341553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696374 + ... + 766385.

It is an arithmetic number, because the mean of its divisors is an integer number (5015804040).

Almost surely, 2^51205341554 is an apocalyptic number.

51205341554 is a deficient number, since it is larger than the sum of its proper divisors (29047523086).

51205341554 is a wasteful number, since it uses less digits than its factorization.

51205341554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463545.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 51205341554 its reverse (45514350215), we get a palindrome (96719691769).

The spelling of 51205341554 in words is "fifty-one billion, two hundred five million, three hundred forty-one thousand, five hundred fifty-four".