51109099658 has 8 divisors (see below), whose sum is σ = 76679772960. Its totient is φ = 25549175340.

The previous prime is 51109099649. The next prime is 51109099667. The reversal of 51109099658 is 85699090115.

It is an interprime number because it is at equal distance from previous prime (51109099649) and next prime (51109099667).

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

It is a super-2 number, since 2×51109099658² (a number of 22 digits) contains 22 as substring.

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, 2675348 + ... + 2694383.

It is an arithmetic number, because the mean of its divisors is an integer number (9584971620).

Almost surely, 2^51109099658 is an apocalyptic number.

51109099658 is a deficient number, since it is larger than the sum of its proper divisors (25570673302).

51109099658 is a wasteful number, since it uses less digits than its factorization.

51109099658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374492.

The product of its (nonzero) digits is 874800, while the sum is 53.

The spelling of 51109099658 in words is "fifty-one billion, one hundred nine million, ninety-nine thousand, six hundred fifty-eight".