65237672557 has 2 divisors, whose sum is σ = 65237672558. Its totient is φ = 65237672556.

The previous prime is 65237672551. The next prime is 65237672561. The reversal of 65237672557 is 75527673256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43419723876 + 21817948681 = 208374^2 + 147709^2 .

It is a cyclic number.

It is not a de Polignac number, because 65237672557 - 2⁷ = 65237672429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65237672498 and 65237672507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65237672551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32618836278 + 32618836279.

It is an arithmetic number, because the mean of its divisors is an integer number (32618836279).

Almost surely, 2^65237672557 is an apocalyptic number.

It is an amenable number.

65237672557 is a deficient number, since it is larger than the sum of its proper divisors (1).

65237672557 is an equidigital number, since it uses as much as digits as its factorization.

65237672557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18522000, while the sum is 55.

The spelling of 65237672557 in words is "sixty-five billion, two hundred thirty-seven million, six hundred seventy-two thousand, five hundred fifty-seven".