60640484509 has 6 divisors (see below), whose sum is σ = 66654416990. Its totient is φ = 55127713080.

The previous prime is 60640484507. The next prime is 60640484519. The reversal of 60640484509 is 90548404606.

It can be written as a sum of positive squares in only one way, i.e., 51712124409 + 8928360100 = 227403^2 + 94490^2 .

It is not a de Polignac number, because 60640484509 - 2¹ = 60640484507 is a prime.

It is a super-2 number, since 2×60640484509² (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 (60640484503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250580394 + ... + 250580635.

Almost surely, 2^60640484509 is an apocalyptic number.

It is an amenable number.

60640484509 is a deficient number, since it is larger than the sum of its proper divisors (6013932481).

60640484509 is a wasteful number, since it uses less digits than its factorization.

60640484509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501161051 (or 501161040 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 60640484509 in words is "sixty billion, six hundred forty million, four hundred eighty-four thousand, five hundred nine".