65456951389 has 2 divisors, whose sum is σ = 65456951390. Its totient is φ = 65456951388.

The previous prime is 65456951383. The next prime is 65456951393. The reversal of 65456951389 is 98315965456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57525624025 + 7931327364 = 239845^2 + 89058^2 .

It is a cyclic number.

It is not a de Polignac number, because 65456951389 - 2³ = 65456951381 is a prime.

It is a super-2 number, since 2×65456951389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65456951381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32728475694 + 32728475695.

It is an arithmetic number, because the mean of its divisors is an integer number (32728475695).

Almost surely, 2^65456951389 is an apocalyptic number.

It is an amenable number.

65456951389 is a deficient number, since it is larger than the sum of its proper divisors (1).

65456951389 is an equidigital number, since it uses as much as digits as its factorization.

65456951389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992000, while the sum is 61.

The spelling of 65456951389 in words is "sixty-five billion, four hundred fifty-six million, nine hundred fifty-one thousand, three hundred eighty-nine".