40445432555 has 8 divisors (see below), whose sum is σ = 52946748144. Its totient is φ = 29414860000.

The previous prime is 40445432549. The next prime is 40445432561. The reversal of 40445432555 is 55523454404.

It is an interprime number because it is at equal distance from previous prime (40445432549) and next prime (40445432561).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40445432555 - 2⁴ = 40445432539 is a prime.

It is a super-2 number, since 2×40445432555² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367685696 + ... + 367685805.

It is an arithmetic number, because the mean of its divisors is an integer number (6618343518).

Almost surely, 2^40445432555 is an apocalyptic number.

40445432555 is a deficient number, since it is larger than the sum of its proper divisors (12501315589).

40445432555 is a wasteful number, since it uses less digits than its factorization.

40445432555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735371517.

The product of its (nonzero) digits is 960000, while the sum is 41.

Adding to 40445432555 its reverse (55523454404), we get a palindrome (95968886959).

The spelling of 40445432555 in words is "forty billion, four hundred forty-five million, four hundred thirty-two thousand, five hundred fifty-five".