65156002641 has 32 divisors (see below), whose sum is σ = 97139120000. Its totient is φ = 43162818624.

The previous prime is 65156002627. The next prime is 65156002649. The reversal of 65156002641 is 14620065156.

65156002641 is a `hidden beast` number, since 6 + 5 + 1 + 5 + 6 + 0 + 0 + 2 + 641 = 666.

It is not a de Polignac number, because 65156002641 - 2²³ = 65147614033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65156002596 and 65156002605.

It is not an unprimeable number, because it can be changed into a prime (65156002649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3223635 + ... + 3243783.

It is an arithmetic number, because the mean of its divisors is an integer number (3035597500).

Almost surely, 2^65156002641 is an apocalyptic number.

It is an amenable number.

65156002641 is a deficient number, since it is larger than the sum of its proper divisors (31983117359).

65156002641 is a wasteful number, since it uses less digits than its factorization.

65156002641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20910 (or 20904 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 65156002641 its reverse (14620065156), we get a palindrome (79776067797).

The spelling of 65156002641 in words is "sixty-five billion, one hundred fifty-six million, two thousand, six hundred forty-one".