5640136973 has 2 divisors, whose sum is σ = 5640136974. Its totient is φ = 5640136972.

The previous prime is 5640136969. The next prime is 5640137029. The reversal of 5640136973 is 3796310465.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4531713124 + 1108423849 = 67318^2 + 33293^2 .

It is a cyclic number.

It is not a de Polignac number, because 5640136973 - 2² = 5640136969 is a prime.

It is a super-2 number, since 2×5640136973² = 63622290148403205458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640136273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820068486 + 2820068487.

It is an arithmetic number, because the mean of its divisors is an integer number (2820068487).

Almost surely, 2^5640136973 is an apocalyptic number.

It is an amenable number.

5640136973 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640136973 is an equidigital number, since it uses as much as digits as its factorization.

5640136973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 5640136973 is about 75100.8453547628. The cubic root of 5640136973 is about 1780.0405003830.

The spelling of 5640136973 in words is "five billion, six hundred forty million, one hundred thirty-six thousand, nine hundred seventy-three".