65406487580 has 48 divisors (see below), whose sum is σ = 157209044160. Its totient is φ = 22391728128.

The previous prime is 65406487543. The next prime is 65406487589. The reversal of 65406487580 is 8578460456.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65406487589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252875 + ... + 441314.

It is an arithmetic number, because the mean of its divisors is an integer number (3275188420).

Almost surely, 2^65406487580 is an apocalyptic number.

It is an amenable number.

65406487580 is an abundant number, since it is smaller than the sum of its proper divisors (91802556580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65406487580 is a wasteful number, since it uses less digits than its factorization.

65406487580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694878 (or 694876 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 65406487580 in words is "sixty-five billion, four hundred six million, four hundred eighty-seven thousand, five hundred eighty".