40550355403 has 4 divisors (see below), whose sum is σ = 41493386968. Its totient is φ = 39607323840.

The previous prime is 40550355379. The next prime is 40550355421. The reversal of 40550355403 is 30455305504.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40550355403 is a prime.

It is a super-2 number, since 2×40550355403² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40550355463) 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, 471515718 + ... + 471515803.

It is an arithmetic number, because the mean of its divisors is an integer number (10373346742).

Almost surely, 2^40550355403 is an apocalyptic number.

40550355403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40550355403 is a deficient number, since it is larger than the sum of its proper divisors (943031565).

40550355403 is an equidigital number, since it uses as much as digits as its factorization.

40550355403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943031564.

The product of its (nonzero) digits is 90000, while the sum is 34.

The spelling of 40550355403 in words is "forty billion, five hundred fifty million, three hundred fifty-five thousand, four hundred three".