65151450249 has 4 divisors (see below), whose sum is σ = 86868600336. Its totient is φ = 43434300164.

The previous prime is 65151450241. The next prime is 65151450277. The reversal of 65151450249 is 94205415156.

It is a happy number.

65151450249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65151450249 - 2³ = 65151450241 is a prime.

It is a super-3 number, since 3×65151450249³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 65151450249.

It is not an unprimeable number, because it can be changed into a prime (65151450241) 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, 10858575039 + ... + 10858575044.

It is an arithmetic number, because the mean of its divisors is an integer number (21717150084).

Almost surely, 2^65151450249 is an apocalyptic number.

It is an amenable number.

65151450249 is a deficient number, since it is larger than the sum of its proper divisors (21717150087).

65151450249 is a wasteful number, since it uses less digits than its factorization.

65151450249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21717150086.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 65151450249 in words is "sixty-five billion, one hundred fifty-one million, four hundred fifty thousand, two hundred forty-nine".