65402252387 has 8 divisors (see below), whose sum is σ = 67531192320. Its totient is φ = 63274511880.

The previous prime is 65402252381. The next prime is 65402252411. The reversal of 65402252387 is 78325220456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65402252387 - 2⁸ = 65402252131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65402252381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188363 + ... + 407780.

It is an arithmetic number, because the mean of its divisors is an integer number (8441399040).

Almost surely, 2^65402252387 is an apocalyptic number.

65402252387 is a deficient number, since it is larger than the sum of its proper divisors (2128939933).

65402252387 is a wasteful number, since it uses less digits than its factorization.

65402252387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599713.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 65402252387 in words is "sixty-five billion, four hundred two million, two hundred fifty-two thousand, three hundred eighty-seven".