65146545544 has 8 divisors (see below), whose sum is σ = 122149772910. Its totient is φ = 32573272768.

The previous prime is 65146545533. The next prime is 65146545571. The reversal of 65146545544 is 44554564156.

It can be written as a sum of positive squares in only one way, i.e., 65146436644 + 108900 = 255238^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071659089 + ... + 4071659104.

Almost surely, 2^65146545544 is an apocalyptic number.

It is an amenable number.

65146545544 is a deficient number, since it is larger than the sum of its proper divisors (57003227366).

65146545544 is a wasteful number, since it uses less digits than its factorization.

65146545544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143318199 (or 8143318195 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 49.

The spelling of 65146545544 in words is "sixty-five billion, one hundred forty-six million, five hundred forty-five thousand, five hundred forty-four".