51023840371 has 4 divisors (see below), whose sum is σ = 58312960432. Its totient is φ = 43734720312.

The previous prime is 51023840317. The next prime is 51023840383. The reversal of 51023840371 is 17304832015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51023840371 - 2¹³ = 51023832179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023840311) 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, 3644560020 + ... + 3644560033.

It is an arithmetic number, because the mean of its divisors is an integer number (14578240108).

Almost surely, 2^51023840371 is an apocalyptic number.

51023840371 is a deficient number, since it is larger than the sum of its proper divisors (7289120061).

51023840371 is an equidigital number, since it uses as much as digits as its factorization.

51023840371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289120060.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 51023840371 in words is "fifty-one billion, twenty-three million, eight hundred forty thousand, three hundred seventy-one".