5640370251 has 8 divisors (see below), whose sum is σ = 7520846544. Its totient is φ = 3760070400.

The previous prime is 5640370199. The next prime is 5640370291. The reversal of 5640370251 is 1520730465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5640370251 - 2⁹ = 5640369739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5640370291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81951 + ... + 134151.

It is an arithmetic number, because the mean of its divisors is an integer number (940105818).

Almost surely, 2^5640370251 is an apocalyptic number.

5640370251 is a deficient number, since it is larger than the sum of its proper divisors (1880476293).

5640370251 is a wasteful number, since it uses less digits than its factorization.

5640370251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88221.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 5640370251 is about 75102.3984370672. The cubic root of 5640370251 is about 1780.0650410733.

The spelling of 5640370251 in words is "five billion, six hundred forty million, three hundred seventy thousand, two hundred fifty-one".