65142555511 has 4 divisors (see below), whose sum is σ = 71064606024. Its totient is φ = 59220505000.

The previous prime is 65142555503. The next prime is 65142555523. The reversal of 65142555511 is 11555524156.

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 65142555511 - 2³ = 65142555503 is a prime.

It is a super-2 number, since 2×65142555511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142555571) 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, 2961025240 + ... + 2961025261.

It is an arithmetic number, because the mean of its divisors is an integer number (17766151506).

Almost surely, 2^65142555511 is an apocalyptic number.

65142555511 is a deficient number, since it is larger than the sum of its proper divisors (5922050513).

65142555511 is a wasteful number, since it uses less digits than its factorization.

65142555511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922050512.

The product of its digits is 150000, while the sum is 40.

The spelling of 65142555511 in words is "sixty-five billion, one hundred forty-two million, five hundred fifty-five thousand, five hundred eleven".