51649536001 has 4 divisors (see below), whose sum is σ = 59028041152. Its totient is φ = 44271030852.

The previous prime is 51649535933. The next prime is 51649536013. The reversal of 51649536001 is 10063594615.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51649536001 - 2¹⁷ = 51649404929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51649536091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3689252565 + ... + 3689252578.

It is an arithmetic number, because the mean of its divisors is an integer number (14757010288).

Almost surely, 2^51649536001 is an apocalyptic number.

It is an amenable number.

51649536001 is a deficient number, since it is larger than the sum of its proper divisors (7378505151).

51649536001 is an equidigital number, since it uses as much as digits as its factorization.

51649536001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7378505150.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 51649536001 in words is "fifty-one billion, six hundred forty-nine million, five hundred thirty-six thousand, one".