5681650751 has 4 divisors (see below), whose sum is σ = 6493315152. Its totient is φ = 4869986352.

The previous prime is 5681650747. The next prime is 5681650763. The reversal of 5681650751 is 1570561865.

It is a happy number.

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

It is not a de Polignac number, because 5681650751 - 2² = 5681650747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681653751) 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, 405832190 + ... + 405832203.

It is an arithmetic number, because the mean of its divisors is an integer number (1623328788).

Almost surely, 2^5681650751 is an apocalyptic number.

5681650751 is a deficient number, since it is larger than the sum of its proper divisors (811664401).

5681650751 is an equidigital number, since it uses as much as digits as its factorization.

5681650751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811664400.

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 5681650751 is about 75376.7255258545. The cubic root of 5681650751 is about 1784.3971109813.

The spelling of 5681650751 in words is "five billion, six hundred eighty-one million, six hundred fifty thousand, seven hundred fifty-one".