65214983557 has 4 divisors (see below), whose sum is σ = 67318692736. Its totient is φ = 63111274380.

The previous prime is 65214983549. The next prime is 65214983609. The reversal of 65214983557 is 75538941256.

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 65214983557 - 2³ = 65214983549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65214983498 and 65214983507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65214989557) 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, 1051854543 + ... + 1051854604.

It is an arithmetic number, because the mean of its divisors is an integer number (16829673184).

Almost surely, 2^65214983557 is an apocalyptic number.

It is an amenable number.

65214983557 is a deficient number, since it is larger than the sum of its proper divisors (2103709179).

65214983557 is a wasteful number, since it uses less digits than its factorization.

65214983557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103709178.

The product of its digits is 9072000, while the sum is 55.

The spelling of 65214983557 in words is "sixty-five billion, two hundred fourteen million, nine hundred eighty-three thousand, five hundred fifty-seven".