65474181872 has 20 divisors (see below), whose sum is σ = 138388612056. Its totient is φ = 29760991680.

The previous prime is 65474181869. The next prime is 65474181881. The reversal of 65474181872 is 27818147456.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186006023 + ... + 186006374.

Almost surely, 2^65474181872 is an apocalyptic number.

It is an amenable number.

65474181872 is an abundant number, since it is smaller than the sum of its proper divisors (72914430184).

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

65474181872 is a wasteful number, since it uses less digits than its factorization.

65474181872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372012416 (or 372012410 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 53.

The spelling of 65474181872 in words is "sixty-five billion, four hundred seventy-four million, one hundred eighty-one thousand, eight hundred seventy-two".