65290732649 has 4 divisors (see below), whose sum is σ = 66265221264. Its totient is φ = 64316244036.

The previous prime is 65290732607. The next prime is 65290732651. The reversal of 65290732649 is 94623709256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65290732649 - 2¹² = 65290728553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65290732649.

It is not an unprimeable number, because it can be changed into a prime (65290732699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487244207 + ... + 487244340.

It is an arithmetic number, because the mean of its divisors is an integer number (16566305316).

Almost surely, 2^65290732649 is an apocalyptic number.

It is an amenable number.

65290732649 is a deficient number, since it is larger than the sum of its proper divisors (974488615).

65290732649 is an equidigital number, since it uses as much as digits as its factorization.

65290732649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974488614.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 65290732649 in words is "sixty-five billion, two hundred ninety million, seven hundred thirty-two thousand, six hundred forty-nine".