65400340232 has 32 divisors (see below), whose sum is σ = 124329734400. Its totient is φ = 32246757504.

The previous prime is 65400340217. The next prime is 65400340253. The reversal of 65400340232 is 23204300456.

It is a super-2 number, since 2×65400340232² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65400340195 and 65400340204.

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, 457268 + ... + 583004.

It is an arithmetic number, because the mean of its divisors is an integer number (3885304200).

Almost surely, 2^65400340232 is an apocalyptic number.

It is an amenable number.

65400340232 is a deficient number, since it is larger than the sum of its proper divisors (58929394168).

65400340232 is a wasteful number, since it uses less digits than its factorization.

65400340232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126645 (or 126641 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 65400340232 its reverse (23204300456), we get a palindrome (88604640688).

The spelling of 65400340232 in words is "sixty-five billion, four hundred million, three hundred forty thousand, two hundred thirty-two".