51498198886 has 8 divisors (see below), whose sum is σ = 77283050904. Its totient is φ = 25737181920.

The previous prime is 51498198877. The next prime is 51498198949. The reversal of 51498198886 is 68889189415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5953360 + ... + 5962003.

It is an arithmetic number, because the mean of its divisors is an integer number (9660381363).

Almost surely, 2^51498198886 is an apocalyptic number.

51498198886 is a deficient number, since it is larger than the sum of its proper divisors (25784852018).

51498198886 is a wasteful number, since it uses less digits than its factorization.

51498198886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11917526.

The product of its digits is 39813120, while the sum is 67.

The spelling of 51498198886 in words is "fifty-one billion, four hundred ninety-eight million, one hundred ninety-eight thousand, eight hundred eighty-six".