40229027561 has 4 divisors (see below), whose sum is σ = 40241374800. Its totient is φ = 40216680324.

The previous prime is 40229027521. The next prime is 40229027599. The reversal of 40229027561 is 16572092204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40229027561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40229027521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6168731 + ... + 6175248.

It is an arithmetic number, because the mean of its divisors is an integer number (10060343700).

Almost surely, 2^40229027561 is an apocalyptic number.

It is an amenable number.

40229027561 is a deficient number, since it is larger than the sum of its proper divisors (12347239).

40229027561 is a wasteful number, since it uses less digits than its factorization.

40229027561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12347238.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 40229027561 in words is "forty billion, two hundred twenty-nine million, twenty-seven thousand, five hundred sixty-one".