51498198885 has 32 divisors (see below), whose sum is σ = 94184294400. Its totient is φ = 23537994048.

The previous prime is 51498198877. The next prime is 51498198949. The reversal of 51498198885 is 58889189415.

It is not a de Polignac number, because 51498198885 - 2³ = 51498198877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 622464 + ... + 700326.

It is an arithmetic number, because the mean of its divisors is an integer number (2943259200).

Almost surely, 2^51498198885 is an apocalyptic number.

It is an amenable number.

51498198885 is a deficient number, since it is larger than the sum of its proper divisors (42686095515).

51498198885 is a wasteful number, since it uses less digits than its factorization.

51498198885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84177.

The product of its digits is 33177600, while the sum is 66.

The spelling of 51498198885 in words is "fifty-one billion, four hundred ninety-eight million, one hundred ninety-eight thousand, eight hundred eighty-five".