51106001004 has 60 divisors (see below), whose sum is σ = 133624535968. Its totient is φ = 17032356000.

The previous prime is 51106001003. The next prime is 51106001029. The reversal of 51106001004 is 40010060115.

51106001004 is a `hidden beast` number, since 51 + 1 + 0 + 600 + 10 + 0 + 4 = 666.

It is a super-2 number, since 2×51106001004² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (51106001003) 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 19 ways as a sum of consecutive naturals, for example, 2614989 + ... + 2634459.

Almost surely, 2^51106001004 is an apocalyptic number.

51106001004 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51106001004 is an abundant number, since it is smaller than the sum of its proper divisors (82518534964).

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

51106001004 is a wasteful number, since it uses less digits than its factorization.

51106001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27588 (or 27577 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 51106001004 its reverse (40010060115), we get a palindrome (91116061119).

The spelling of 51106001004 in words is "fifty-one billion, one hundred six million, one thousand, four".