65222556513 has 4 divisors (see below), whose sum is σ = 86963408688. Its totient is φ = 43481704340.

The previous prime is 65222556461. The next prime is 65222556551. The reversal of 65222556513 is 31565522256.

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 65222556513 - 2¹⁷ = 65222425441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65222546513) 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, 10870426083 + ... + 10870426088.

It is an arithmetic number, because the mean of its divisors is an integer number (21740852172).

Almost surely, 2^65222556513 is an apocalyptic number.

It is an amenable number.

65222556513 is a deficient number, since it is larger than the sum of its proper divisors (21740852175).

65222556513 is a wasteful number, since it uses less digits than its factorization.

65222556513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21740852174.

The product of its digits is 540000, while the sum is 42.

The spelling of 65222556513 in words is "sixty-five billion, two hundred twenty-two million, five hundred fifty-six thousand, five hundred thirteen".