40356645556 has 24 divisors (see below), whose sum is σ = 72916691456. Its totient is φ = 19523561760.

The previous prime is 40356645547. The next prime is 40356645557. The reversal of 40356645556 is 65554665304.

It is a super-2 number, since 2×40356645556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40356645557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659785 + ... + 718351.

Almost surely, 2^40356645556 is an apocalyptic number.

It is an amenable number.

40356645556 is a deficient number, since it is larger than the sum of its proper divisors (32560045900).

40356645556 is a wasteful number, since it uses less digits than its factorization.

40356645556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64159 (or 64157 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 40356645556 in words is "forty billion, three hundred fifty-six million, six hundred forty-five thousand, five hundred fifty-six".