51201656033 has 4 divisors (see below), whose sum is σ = 55856352048. Its totient is φ = 46546960020.

The previous prime is 51201656029. The next prime is 51201656059. The reversal of 51201656033 is 33065610215.

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 not a de Polignac number, because 51201656033 - 2² = 51201656029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51201653033) 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, 2327347991 + ... + 2327348012.

It is an arithmetic number, because the mean of its divisors is an integer number (13964088012).

Almost surely, 2^51201656033 is an apocalyptic number.

It is an amenable number.

51201656033 is a deficient number, since it is larger than the sum of its proper divisors (4654696015).

51201656033 is a wasteful number, since it uses less digits than its factorization.

51201656033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654696014.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 51201656033 in words is "fifty-one billion, two hundred one million, six hundred fifty-six thousand, thirty-three".