51201099994 has 8 divisors (see below), whose sum is σ = 83783618208. Its totient is φ = 23273227260.

The previous prime is 51201099991. The next prime is 51201100001. The reversal of 51201099994 is 49999010215.

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

It is not an unprimeable number, because it can be changed into a prime (51201099991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163661342 + ... + 1163661385.

It is an arithmetic number, because the mean of its divisors is an integer number (10472952276).

Almost surely, 2^51201099994 is an apocalyptic number.

51201099994 is a deficient number, since it is larger than the sum of its proper divisors (32582518214).

51201099994 is a wasteful number, since it uses less digits than its factorization.

51201099994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327322740.

The product of its (nonzero) digits is 262440, while the sum is 49.

The spelling of 51201099994 in words is "fifty-one billion, two hundred one million, ninety-nine thousand, nine hundred ninety-four".