51495389098 has 4 divisors (see below), whose sum is σ = 77243083650. Its totient is φ = 25747694548.

The previous prime is 51495389089. The next prime is 51495389159. The reversal of 51495389098 is 89098359415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50977963089 + 517426009 = 225783^2 + 22747^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12873847273 + ... + 12873847276.

Almost surely, 2^51495389098 is an apocalyptic number.

51495389098 is a deficient number, since it is larger than the sum of its proper divisors (25747694552).

51495389098 is a wasteful number, since it uses less digits than its factorization.

51495389098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25747694551.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 51495389098 in words is "fifty-one billion, four hundred ninety-five million, three hundred eighty-nine thousand, ninety-eight".