4065581372 has 12 divisors (see below), whose sum is σ = 7280227416. Its totient is φ = 1985516400.

The previous prime is 4065581363. The next prime is 4065581383. The reversal of 4065581372 is 2731855604.

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, 11818379 + ... + 11818722.

It is an arithmetic number, because the mean of its divisors is an integer number (606685618).

Almost surely, 2^4065581372 is an apocalyptic number.

It is an amenable number.

4065581372 is a deficient number, since it is larger than the sum of its proper divisors (3214646044).

4065581372 is a wasteful number, since it uses less digits than its factorization.

4065581372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23637148 (or 23637146 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 4065581372 is about 63761.9116087339. The cubic root of 4065581372 is about 1596.0293957354.

The spelling of 4065581372 in words is "four billion, sixty-five million, five hundred eighty-one thousand, three hundred seventy-two".