40551264605 has 4 divisors (see below), whose sum is σ = 48661517532. Its totient is φ = 32441011680.

The previous prime is 40551264583. The next prime is 40551264617. The reversal of 40551264605 is 50646215504.

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 21708486244 + 18842778361 = 147338^2 + 137269^2 .

It is not a de Polignac number, because 40551264605 - 2²⁰ = 40550216029 is a prime.

It is a super-2 number, since 2×40551264605² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4055126456 + ... + 4055126465.

It is an arithmetic number, because the mean of its divisors is an integer number (12165379383).

Almost surely, 2^40551264605 is an apocalyptic number.

It is an amenable number.

40551264605 is a deficient number, since it is larger than the sum of its proper divisors (8110252927).

40551264605 is an equidigital number, since it uses as much as digits as its factorization.

40551264605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110252926.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 40551264605 in words is "forty billion, five hundred fifty-one million, two hundred sixty-four thousand, six hundred five".