51005009598 has 16 divisors (see below), whose sum is σ = 102436842240. Its totient is φ = 16930532696.

The previous prime is 51005009597. The next prime is 51005009641. The reversal of 51005009598 is 89590050015.

It is a happy number.

It is a super-2 number, since 2×51005009598² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005009597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17782740 + ... + 17785607.

It is an arithmetic number, because the mean of its divisors is an integer number (6402302640).

Almost surely, 2^51005009598 is an apocalyptic number.

51005009598 is an abundant number, since it is smaller than the sum of its proper divisors (51431832642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51005009598 is a wasteful number, since it uses less digits than its factorization.

51005009598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35568591.

The product of its (nonzero) digits is 81000, while the sum is 42.

The spelling of 51005009598 in words is "fifty-one billion, five million, nine thousand, five hundred ninety-eight".