65401097587 has 4 divisors (see below), whose sum is σ = 74744111536. Its totient is φ = 56058083640.

The previous prime is 65401097581. The next prime is 65401097617. The reversal of 65401097587 is 78579010456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65401097587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65401097581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4671506964 + ... + 4671506977.

It is an arithmetic number, because the mean of its divisors is an integer number (18686027884).

Almost surely, 2^65401097587 is an apocalyptic number.

65401097587 is a deficient number, since it is larger than the sum of its proper divisors (9343013949).

65401097587 is an equidigital number, since it uses as much as digits as its factorization.

65401097587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9343013948.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 65401097587 in words is "sixty-five billion, four hundred one million, ninety-seven thousand, five hundred eighty-seven".