65220120667151 has 4 divisors (see below), whose sum is σ = 69056598353472. Its totient is φ = 61383642980832.

The previous prime is 65220120667127. The next prime is 65220120667171. The reversal of 65220120667151 is 15176602102256.

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 65220120667151 - 2¹⁴ = 65220120650767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65220120667111) 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, 1918238843135 + ... + 1918238843168.

It is an arithmetic number, because the mean of its divisors is an integer number (17264149588368).

Almost surely, 2^{65220120667151} is an apocalyptic number.

65220120667151 is a deficient number, since it is larger than the sum of its proper divisors (3836477686321).

65220120667151 is a wasteful number, since it uses less digits than its factorization.

65220120667151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836477686320.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 65220120667151 in words is "sixty-five trillion, two hundred twenty billion, one hundred twenty million, six hundred sixty-seven thousand, one hundred fifty-one".