51740380633 has 4 divisors (see below), whose sum is σ = 52395322240. Its totient is φ = 51085439028.

The previous prime is 51740380609. The next prime is 51740380691. The reversal of 51740380633 is 33608304715.

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 51740380633 - 2⁹ = 51740380121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51740380603) 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, 327470685 + ... + 327470842.

It is an arithmetic number, because the mean of its divisors is an integer number (13098830560).

Almost surely, 2^51740380633 is an apocalyptic number.

It is an amenable number.

51740380633 is a deficient number, since it is larger than the sum of its proper divisors (654941607).

51740380633 is an equidigital number, since it uses as much as digits as its factorization.

51740380633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654941606.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 51740380633 in words is "fifty-one billion, seven hundred forty million, three hundred eighty thousand, six hundred thirty-three".