65213951297 has 8 divisors (see below), whose sum is σ = 71157612000. Its totient is φ = 59272810560.

The previous prime is 65213951293. The next prime is 65213951329. The reversal of 65213951297 is 79215931256.

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 65213951297 - 2² = 65213951293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65213951293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575672 + ... + 679577.

It is an arithmetic number, because the mean of its divisors is an integer number (8894701500).

Almost surely, 2^65213951297 is an apocalyptic number.

It is an amenable number.

65213951297 is a deficient number, since it is larger than the sum of its proper divisors (5943660703).

65213951297 is a wasteful number, since it uses less digits than its factorization.

65213951297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259983.

The product of its digits is 1020600, while the sum is 50.

The spelling of 65213951297 in words is "sixty-five billion, two hundred thirteen million, nine hundred fifty-one thousand, two hundred ninety-seven".