65640141536 has 48 divisors (see below), whose sum is σ = 129976784784. Its totient is φ = 32630406144.

The previous prime is 65640141499. The next prime is 65640141559. The reversal of 65640141536 is 63514104656.

It is a super-2 number, since 2×65640141536² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65640141493 and 65640141502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12056831 + ... + 12062273.

It is an arithmetic number, because the mean of its divisors is an integer number (2707849683).

Almost surely, 2^65640141536 is an apocalyptic number.

It is an amenable number.

65640141536 is a deficient number, since it is larger than the sum of its proper divisors (64336643248).

65640141536 is a wasteful number, since it uses less digits than its factorization.

65640141536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563 (or 7555 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 65640141536 in words is "sixty-five billion, six hundred forty million, one hundred forty-one thousand, five hundred thirty-six".