40275377561 has 4 divisors (see below), whose sum is σ = 40303563300. Its totient is φ = 40247191824.

The previous prime is 40275377543. The next prime is 40275377587. The reversal of 40275377561 is 16577357204.

It is a happy number.

40275377561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23513155600 + 16762221961 = 153340^2 + 129469^2 .

It is a cyclic number.

It is not a de Polignac number, because 40275377561 - 2⁶ = 40275377497 is a prime.

It is a super-2 number, since 2×40275377561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40275347561) 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, 14090726 + ... + 14093583.

It is an arithmetic number, because the mean of its divisors is an integer number (10075890825).

Almost surely, 2^40275377561 is an apocalyptic number.

It is an amenable number.

40275377561 is a deficient number, since it is larger than the sum of its proper divisors (28185739).

40275377561 is a wasteful number, since it uses less digits than its factorization.

40275377561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28185738.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The spelling of 40275377561 in words is "forty billion, two hundred seventy-five million, three hundred seventy-seven thousand, five hundred sixty-one".