65881460651 has 2 divisors, whose sum is σ = 65881460652. Its totient is φ = 65881460650.

The previous prime is 65881460647. The next prime is 65881460669. The reversal of 65881460651 is 15606418856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65881460651 - 2² = 65881460647 is a prime.

It is a super-2 number, since 2×65881460651² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65881460651.

It is not a weakly prime, because it can be changed into another prime (65881460621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32940730325 + 32940730326.

It is an arithmetic number, because the mean of its divisors is an integer number (32940730326).

Almost surely, 2^65881460651 is an apocalyptic number.

65881460651 is a deficient number, since it is larger than the sum of its proper divisors (1).

65881460651 is an equidigital number, since it uses as much as digits as its factorization.

65881460651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 65881460651 in words is "sixty-five billion, eight hundred eighty-one million, four hundred sixty thousand, six hundred fifty-one".