51430773018 has 32 divisors (see below), whose sum is σ = 109951696512. Its totient is φ = 15998259200.

The previous prime is 51430773011. The next prime is 51430773019. The reversal of 51430773018 is 81037703415.

51430773018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51430773011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4539303 + ... + 4550618.

It is an arithmetic number, because the mean of its divisors is an integer number (3435990516).

Almost surely, 2^51430773018 is an apocalyptic number.

51430773018 is an abundant number, since it is smaller than the sum of its proper divisors (58520923494).

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

51430773018 is a wasteful number, since it uses less digits than its factorization.

51430773018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9089990.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 51430773018 in words is "fifty-one billion, four hundred thirty million, seven hundred seventy-three thousand, eighteen".