64915296296291 has 4 divisors (see below), whose sum is σ = 74188910052912. Its totient is φ = 55641682539672.

The previous prime is 64915296296287. The next prime is 64915296296297. The reversal of 64915296296291 is 19269269251946.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64915296296291 - 2² = 64915296296287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64915296296297) 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, 4636806878300 + ... + 4636806878313.

It is an arithmetic number, because the mean of its divisors is an integer number (18547227513228).

Almost surely, 2^{64915296296291} is an apocalyptic number.

64915296296291 is a deficient number, since it is larger than the sum of its proper divisors (9273613756621).

64915296296291 is an equidigital number, since it uses as much as digits as its factorization.

64915296296291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9273613756620.

The product of its digits is 226748160, while the sum is 71.

The spelling of 64915296296291 in words is "sixty-four trillion, nine hundred fifteen billion, two hundred ninety-six million, two hundred ninety-six thousand, two hundred ninety-one".